[{"article_number":"054405","volume":109,"date_updated":"2024-02-26T09:50:10Z","date_created":"2024-02-18T23:01:01Z","author":[{"full_name":"Franco, D. G.","last_name":"Franco","first_name":"D. G."},{"first_name":"R.","last_name":"Avalos","full_name":"Avalos, R."},{"full_name":"Hafner, D.","first_name":"D.","last_name":"Hafner"},{"id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic","full_name":"Modic, Kimberly A"},{"full_name":"Prots, Yu","first_name":"Yu","last_name":"Prots"},{"last_name":"Stockert","first_name":"O.","full_name":"Stockert, O."},{"first_name":"A.","last_name":"Hoser","full_name":"Hoser, A."},{"full_name":"Moll, P. J.W.","first_name":"P. J.W.","last_name":"Moll"},{"last_name":"Brando","first_name":"M.","full_name":"Brando, M."},{"first_name":"A. A.","last_name":"Aligia","full_name":"Aligia, A. A."},{"last_name":"Geibel","first_name":"C.","full_name":"Geibel, C."}],"department":[{"_id":"KiMo"}],"publisher":"American Physical Society","publication_status":"published","acknowledgement":"The authors thank Bernardo Pentke for the SEM micrographs (Departamento Fisicoquímica de Materiales CABCNEA). We are indebted to Julián Sereni for useful discussions. D. G. F. acknowledges financial support provided by Agencia I+D+i, Argentina, Grant No. PICT-2021-I-INVI00852 and Universidad Nacional de Cuyo (SIIP) Grant No. 06/C018-T1. A. A. A. acknowledges financial support provided by PICT 2018-01546 and PICT 2020A-03661 of the\r\nAgencia I+D+i. ","year":"2024","publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"month":"02","language":[{"iso":"eng"}],"doi":"10.1103/PhysRevB.109.054405","quality_controlled":"1","issue":"5","abstract":[{"lang":"eng","text":"Magnetic frustration allows to access novel and intriguing properties of magnetic systems and has been explored mainly in planar triangular-like arrays of magnetic ions. In this work, we describe the phosphide Ce6Ni6P17, where the Ce+3 ions accommodate in a body-centered cubic lattice of Ce6 regular octahedra. From measurements of magnetization, specific heat, and resistivity, we determine a rich phase diagram as a function of temperature and magnetic field in which different magnetic phases are found. Besides clear evidence of magnetic frustration is obtained from entropy analysis. At zero field, a second-order antiferromagnetic transition occurs at TN1≈1 K followed by a first-order transition at TN2≈0.45 K. With magnetic field new magnetic phases appear, including a weakly first-order transition which ends in a classical critical point and a third magnetic phase. We also study the exact solution of the spin-1/2 Heisenberg model in an octahedron which allows us a qualitative understanding of the phase diagram and compare with the experimental results."}],"type":"journal_article","oa_version":"None","intvolume":" 109","title":"Frustrated magnetism in octahedra-based Ce6 Ni6 P17","status":"public","_id":"15003","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","day":"01","scopus_import":"1","date_published":"2024-02-01T00:00:00Z","article_type":"original","citation":{"apa":"Franco, D. G., Avalos, R., Hafner, D., Modic, K. A., Prots, Y., Stockert, O., … Geibel, C. (2024). Frustrated magnetism in octahedra-based Ce6 Ni6 P17. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.109.054405","ieee":"D. G. Franco et al., “Frustrated magnetism in octahedra-based Ce6 Ni6 P17,” Physical Review B, vol. 109, no. 5. American Physical Society, 2024.","ista":"Franco DG, Avalos R, Hafner D, Modic KA, Prots Y, Stockert O, Hoser A, Moll PJW, Brando M, Aligia AA, Geibel C. 2024. Frustrated magnetism in octahedra-based Ce6 Ni6 P17. Physical Review B. 109(5), 054405.","ama":"Franco DG, Avalos R, Hafner D, et al. Frustrated magnetism in octahedra-based Ce6 Ni6 P17. Physical Review B. 2024;109(5). doi:10.1103/PhysRevB.109.054405","chicago":"Franco, D. G., R. Avalos, D. Hafner, Kimberly A Modic, Yu Prots, O. Stockert, A. Hoser, et al. “Frustrated Magnetism in Octahedra-Based Ce6 Ni6 P17.” Physical Review B. American Physical Society, 2024. https://doi.org/10.1103/PhysRevB.109.054405.","short":"D.G. Franco, R. Avalos, D. Hafner, K.A. Modic, Y. Prots, O. Stockert, A. Hoser, P.J.W. Moll, M. Brando, A.A. Aligia, C. Geibel, Physical Review B 109 (2024).","mla":"Franco, D. G., et al. “Frustrated Magnetism in Octahedra-Based Ce6 Ni6 P17.” Physical Review B, vol. 109, no. 5, 054405, American Physical Society, 2024, doi:10.1103/PhysRevB.109.054405."},"publication":"Physical Review B"},{"scopus_import":"1","article_processing_charge":"No","day":"15","citation":{"ama":"Shekhter A, Mcdonald RD, Ramshaw BJ, Modic KA. Magnetotropic susceptibility. Physical Review B. 2023;108(3). doi:10.1103/PhysRevB.108.035111","ista":"Shekhter A, Mcdonald RD, Ramshaw BJ, Modic KA. 2023. Magnetotropic susceptibility. Physical Review B. 108(3), 035111.","ieee":"A. Shekhter, R. D. Mcdonald, B. J. Ramshaw, and K. A. Modic, “Magnetotropic susceptibility,” Physical Review B, vol. 108, no. 3. American Physical Society, 2023.","apa":"Shekhter, A., Mcdonald, R. D., Ramshaw, B. J., & Modic, K. A. (2023). Magnetotropic susceptibility. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.108.035111","mla":"Shekhter, A., et al. “Magnetotropic Susceptibility.” Physical Review B, vol. 108, no. 3, 035111, American Physical Society, 2023, doi:10.1103/PhysRevB.108.035111.","short":"A. Shekhter, R.D. Mcdonald, B.J. Ramshaw, K.A. Modic, Physical Review B 108 (2023).","chicago":"Shekhter, A., R. D. Mcdonald, B. J. Ramshaw, and Kimberly A Modic. “Magnetotropic Susceptibility.” Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/PhysRevB.108.035111."},"publication":"Physical Review B","article_type":"original","date_published":"2023-07-15T00:00:00Z","type":"journal_article","issue":"3","abstract":[{"lang":"eng","text":"The magnetotropic susceptibility is the thermodynamic coefficient associated with the rotational anisotropy of the free energy in an external magnetic field and is closely related to the magnetic susceptibility. It emerges naturally in frequency-shift measurements of oscillating mechanical cantilevers, which are becoming an increasingly important tool in the quantitative study of the thermodynamics of modern condensed-matter systems. Here we discuss the basic properties of the magnetotropic susceptibility as they relate to the experimental aspects of frequency-shift measurements, as well as to the interpretation of those experiments in terms of the intrinsic properties of the system under study."}],"_id":"13257","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","intvolume":" 108","title":"Magnetotropic susceptibility","status":"public","oa_version":"Preprint","publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"month":"07","external_id":{"isi":["001062708600002"],"arxiv":["2208.10038"]},"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2208.10038"}],"oa":1,"isi":1,"quality_controlled":"1","doi":"10.1103/PhysRevB.108.035111","language":[{"iso":"eng"}],"article_number":"035111","acknowledgement":"We thank Aharon Kapitulnik, Philip Moll, and Andreas Rydh for illuminating discussions. The work at the Los Alamos National Laboratory is supported by National Science Foundation Cooperative Agreements No. DMR-1157490 and No. DMR-1644779, the state of Florida, and the U.S. Department of Energy. A.S. acknowledges support from the DOE/BES Science of 100T grant. B.J.R. acknowledges funding from the National Science Foundation under Grant No.\r\nDMR-1752784.","year":"2023","department":[{"_id":"KiMo"}],"publisher":"American Physical Society","publication_status":"published","author":[{"last_name":"Shekhter","first_name":"A.","full_name":"Shekhter, A."},{"full_name":"Mcdonald, R. D.","first_name":"R. D.","last_name":"Mcdonald"},{"first_name":"B. J.","last_name":"Ramshaw","full_name":"Ramshaw, B. J."},{"last_name":"Modic","first_name":"Kimberly A","orcid":"0000-0001-9760-3147","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","full_name":"Modic, Kimberly A"}],"volume":108,"date_created":"2023-07-23T22:01:10Z","date_updated":"2023-12-13T11:58:57Z"},{"abstract":[{"text":"In RuCl3, inelastic neutron scattering and Raman spectroscopy reveal a continuum of non-spin-wave excitations that persists to high temperature, suggesting the presence of a spin liquid state on a honeycomb lattice. In the context of the Kitaev model, finite magnetic fields introduce interactions between the elementary excitations, and thus the effects of high magnetic fields that are comparable to the spin-exchange energy scale must be explored. Here, we report measurements of the magnetotropic coefficient—the thermodynamic coefficient associated with magnetic anisotropy—over a wide range of magnetic fields and temperatures. We find that magnetic field and temperature compete to determine the magnetic response in a way that is independent of the large intrinsic exchange-interaction energy. This emergent scale-invariant magnetic anisotropy provides evidence for a high degree of exchange frustration that favours the formation of a spin liquid state in RuCl3.","lang":"eng"}],"type":"journal_article","oa_version":"Preprint","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"8673","intvolume":" 17","title":"Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields","status":"public","article_processing_charge":"No","day":"01","scopus_import":"1","date_published":"2021-02-01T00:00:00Z","citation":{"chicago":"Modic, Kimberly A, Ross D. McDonald, J.P.C. Ruff, Maja D. Bachmann, You Lai, Johanna C. Palmstrom, David Graf, et al. “Scale-Invariant Magnetic Anisotropy in RuCl3 at High Magnetic Fields.” Nature Physics. Springer Nature, 2021. https://doi.org/10.1038/s41567-020-1028-0.","mla":"Modic, Kimberly A., et al. “Scale-Invariant Magnetic Anisotropy in RuCl3 at High Magnetic Fields.” Nature Physics, vol. 17, Springer Nature, 2021, pp. 240–44, doi:10.1038/s41567-020-1028-0.","short":"K.A. Modic, R.D. McDonald, J.P.C. Ruff, M.D. Bachmann, Y. Lai, J.C. Palmstrom, D. Graf, M.K. Chan, F.F. Balakirev, J.B. Betts, G.S. Boebinger, M. Schmidt, M.J. Lawler, D.A. Sokolov, P.J.W. Moll, B.J. Ramshaw, A. Shekhter, Nature Physics 17 (2021) 240–244.","ista":"Modic KA, McDonald RD, Ruff JPC, Bachmann MD, Lai Y, Palmstrom JC, Graf D, Chan MK, Balakirev FF, Betts JB, Boebinger GS, Schmidt M, Lawler MJ, Sokolov DA, Moll PJW, Ramshaw BJ, Shekhter A. 2021. Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields. Nature Physics. 17, 240–244.","ieee":"K. A. Modic et al., “Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields,” Nature Physics, vol. 17. Springer Nature, pp. 240–244, 2021.","apa":"Modic, K. A., McDonald, R. D., Ruff, J. P. C., Bachmann, M. D., Lai, Y., Palmstrom, J. C., … Shekhter, A. (2021). Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-020-1028-0","ama":"Modic KA, McDonald RD, Ruff JPC, et al. Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields. Nature Physics. 2021;17:240-244. doi:10.1038/s41567-020-1028-0"},"publication":"Nature Physics","page":"240-244","article_type":"original","author":[{"first_name":"Kimberly A","last_name":"Modic","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","full_name":"Modic, Kimberly A"},{"last_name":"McDonald","first_name":"Ross D.","full_name":"McDonald, Ross D."},{"full_name":"Ruff, J.P.C.","last_name":"Ruff","first_name":"J.P.C."},{"first_name":"Maja D.","last_name":"Bachmann","full_name":"Bachmann, Maja D."},{"last_name":"Lai","first_name":"You","full_name":"Lai, You"},{"full_name":"Palmstrom, Johanna C.","last_name":"Palmstrom","first_name":"Johanna C."},{"first_name":"David","last_name":"Graf","full_name":"Graf, David"},{"full_name":"Chan, Mun K.","last_name":"Chan","first_name":"Mun K."},{"last_name":"Balakirev","first_name":"F.F.","full_name":"Balakirev, F.F."},{"last_name":"Betts","first_name":"J.B.","full_name":"Betts, J.B."},{"first_name":"G.S.","last_name":"Boebinger","full_name":"Boebinger, G.S."},{"full_name":"Schmidt, Marcus","first_name":"Marcus","last_name":"Schmidt"},{"first_name":"Michael J.","last_name":"Lawler","full_name":"Lawler, Michael J."},{"full_name":"Sokolov, D.A.","first_name":"D.A.","last_name":"Sokolov"},{"last_name":"Moll","first_name":"Philip J.W.","full_name":"Moll, Philip J.W."},{"full_name":"Ramshaw, B.J.","last_name":"Ramshaw","first_name":"B.J."},{"first_name":"Arkady","last_name":"Shekhter","full_name":"Shekhter, Arkady"}],"volume":17,"date_created":"2020-10-18T22:01:37Z","date_updated":"2023-08-04T11:03:39Z","year":"2021","acknowledgement":"We thank M. Baenitz, A. Bangura, R. Coldea, G. Jackeli, S. Kivelson, S. Nagler, R. Valenti, C. Varma, S. Winter and J. Zaanen for insightful discussions. Samples were grown at the Max Planck Institute for Chemical Physics of Solids. The d.c.-field measurements were made at the National High Magnetic Field Laboratory (NHMFL) in Tallahassee, FL. The pulsed-field measurements were made in the Pulsed Field Facility of the NHMFL in Los Alamos, NM. All work at the NHMFL is supported through the National Science Foundation Cooperative Agreement nos. DMR-1157490 and DMR-1644779, the US Department of Energy and the State of Florida. R.D.M. acknowledges support from LANL LDRD-DR 20160085 Topology and Strong Correlations. M.C. acknowledges support from the Department of Energy ‘Science of 100 tesla’ BES programme for high-field experiments. X-ray data acquisition and analysis was performed at Cornell University. Research conducted at the Cornell High Energy Synchrotron Source (CHESS) is supported by the National Science Foundation under award no. DMR-1332208. B.J.R. acknowledges support from the Institute for Quantum Matter, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under award no. DE-SC0019331. Y.L. acknowledges support from the US Department of Energy through the LANL/LDRD programme and the G.T. Seaborg institute. J.C.P. is supported by a Gabilan Stanford Graduate Fellowship and an NSF Graduate Research Fellowship (grant no. DGE-114747). P.J.W.M. acknowledges funding from the Swiss National Science Foundation through project no. PP00P2-176789.","publisher":"Springer Nature","department":[{"_id":"KiMo"}],"publication_status":"published","publication_identifier":{"issn":["17452473"],"eissn":["17452481"]},"month":"02","doi":"10.1038/s41567-020-1028-0","language":[{"iso":"eng"}],"external_id":{"arxiv":["2005.04228"],"isi":["000575344700003"]},"oa":1,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2005.04228"}],"isi":1,"quality_controlled":"1"},{"month":"03","oa":1,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1903.00552"}],"external_id":{"arxiv":["1903.00552"],"pmid":["32181367"]},"quality_controlled":"1","doi":"10.1126/sciadv.aaz4074","language":[{"iso":"eng"}],"article_number":"eaaz4074","extern":"1","pmid":1,"year":"2020","publisher":"American Association for the Advancement of Science","publication_status":"published","author":[{"last_name":"Ghosh","first_name":"Sayak","full_name":"Ghosh, Sayak"},{"last_name":"Matty","first_name":"Michael","full_name":"Matty, Michael"},{"first_name":"Ryan","last_name":"Baumbach","full_name":"Baumbach, Ryan"},{"full_name":"Bauer, Eric D.","last_name":"Bauer","first_name":"Eric D."},{"full_name":"Modic, Kimberly A","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic"},{"full_name":"Shekhter, Arkady","last_name":"Shekhter","first_name":"Arkady"},{"first_name":"J. A.","last_name":"Mydosh","full_name":"Mydosh, J. A."},{"full_name":"Kim, Eun-Ah","first_name":"Eun-Ah","last_name":"Kim"},{"first_name":"B. J.","last_name":"Ramshaw","full_name":"Ramshaw, B. J."}],"volume":6,"date_created":"2019-11-19T14:01:10Z","date_updated":"2022-08-25T15:08:41Z","article_processing_charge":"No","day":"06","citation":{"chicago":"Ghosh, Sayak, Michael Matty, Ryan Baumbach, Eric D. Bauer, Kimberly A Modic, Arkady Shekhter, J. A. Mydosh, Eun-Ah Kim, and B. J. Ramshaw. “One-Component Order Parameter in URu2Si2 Uncovered by Resonant Ultrasound Spectroscopy and Machine Learning.” Science Advances. American Association for the Advancement of Science, 2020. https://doi.org/10.1126/sciadv.aaz4074.","short":"S. Ghosh, M. Matty, R. Baumbach, E.D. Bauer, K.A. Modic, A. Shekhter, J.A. Mydosh, E.-A. Kim, B.J. Ramshaw, Science Advances 6 (2020).","mla":"Ghosh, Sayak, et al. “One-Component Order Parameter in URu2Si2 Uncovered by Resonant Ultrasound Spectroscopy and Machine Learning.” Science Advances, vol. 6, no. 10, eaaz4074, American Association for the Advancement of Science, 2020, doi:10.1126/sciadv.aaz4074.","apa":"Ghosh, S., Matty, M., Baumbach, R., Bauer, E. D., Modic, K. A., Shekhter, A., … Ramshaw, B. J. (2020). One-component order parameter in URu2Si2 uncovered by resonant ultrasound spectroscopy and machine learning. Science Advances. American Association for the Advancement of Science. https://doi.org/10.1126/sciadv.aaz4074","ieee":"S. Ghosh et al., “One-component order parameter in URu2Si2 uncovered by resonant ultrasound spectroscopy and machine learning,” Science Advances, vol. 6, no. 10. American Association for the Advancement of Science, 2020.","ista":"Ghosh S, Matty M, Baumbach R, Bauer ED, Modic KA, Shekhter A, Mydosh JA, Kim E-A, Ramshaw BJ. 2020. One-component order parameter in URu2Si2 uncovered by resonant ultrasound spectroscopy and machine learning. Science Advances. 6(10), eaaz4074.","ama":"Ghosh S, Matty M, Baumbach R, et al. One-component order parameter in URu2Si2 uncovered by resonant ultrasound spectroscopy and machine learning. Science Advances. 2020;6(10). doi:10.1126/sciadv.aaz4074"},"publication":"Science Advances","article_type":"original","date_published":"2020-03-06T00:00:00Z","type":"journal_article","issue":"10","abstract":[{"lang":"eng","text":"The unusual correlated state that emerges in URu2Si2 below THO = 17.5 K is known as “hidden order” because even basic characteristics of the order parameter, such as its dimensionality (whether it has one component or two), are “hidden.” We use resonant ultrasound spectroscopy to measure the symmetry-resolved elastic anomalies across THO. We observe no anomalies in the shear elastic moduli, providing strong thermodynamic evidence for a one-component order parameter. We develop a machine learning framework that reaches this conclusion directly from the raw data, even in a crystal that is too small for traditional resonant ultrasound. Our result rules out a broad class of theories of hidden order based on two-component order parameters, and constrains the nature of the fluctuations from which unconventional superconductivity emerges at lower temperature. Our machine learning framework is a powerful new tool for classifying the ubiquitous competing orders in correlated electron systems."}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","_id":"7084","intvolume":" 6","status":"public","title":"One-component order parameter in URu2Si2 uncovered by resonant ultrasound spectroscopy and machine learning","oa_version":"Preprint"},{"abstract":[{"text":"An understanding of the missing antinodal electronic excitations in the pseudogap state is essential for uncovering the physics of the underdoped cuprate high-temperature superconductors1,2,3,4,5,6. The majority of high-temperature experiments performed thus far, however, have been unable to discern whether the antinodal states are rendered unobservable due to their damping or whether they vanish due to their gapping7,8,9,10,11,12,13,14,15,16,17,18. Here, we distinguish between these two scenarios by using quantum oscillations to examine whether the small Fermi surface pocket, found to occupy only 2% of the Brillouin zone in the underdoped cuprates19,20,21,22,23,24, exists in isolation against a majority of completely gapped density of states spanning the antinodes, or whether it is thermodynamically coupled to a background of ungapped antinodal states. We find that quantum oscillations associated with the small Fermi surface pocket exhibit a signature sawtooth waveform characteristic of an isolated two-dimensional Fermi surface pocket25,26,27,28,29,30,31,32. This finding reveals that the antinodal states are destroyed by a hard gap that extends over the majority of the Brillouin zone, placing strong constraints on a drastic underlying origin of quasiparticle disappearance over almost the entire Brillouin zone in the pseudogap regime7,8,9,10,11,12,13,14,15,16,17,18.","lang":"eng"}],"type":"journal_article","oa_version":"Preprint","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"7942","intvolume":" 16","status":"public","title":"Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors","article_processing_charge":"No","day":"01","scopus_import":"1","date_published":"2020-08-01T00:00:00Z","citation":{"ama":"Hartstein M, Hsu YT, Modic KA, et al. Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors. Nature Physics. 2020;16:841-847. doi:10.1038/s41567-020-0910-0","apa":"Hartstein, M., Hsu, Y. T., Modic, K. A., Porras, J., Loew, T., Tacon, M. L., … Harrison, N. (2020). Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-020-0910-0","ieee":"M. Hartstein et al., “Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors,” Nature Physics, vol. 16. Springer Nature, pp. 841–847, 2020.","ista":"Hartstein M, Hsu YT, Modic KA, Porras J, Loew T, Tacon ML, Zuo H, Wang J, Zhu Z, Chan MK, Mcdonald RD, Lonzarich GG, Keimer B, Sebastian SE, Harrison N. 2020. Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors. Nature Physics. 16, 841–847.","short":"M. Hartstein, Y.T. Hsu, K.A. Modic, J. Porras, T. Loew, M.L. Tacon, H. Zuo, J. Wang, Z. Zhu, M.K. Chan, R.D. Mcdonald, G.G. Lonzarich, B. Keimer, S.E. Sebastian, N. Harrison, Nature Physics 16 (2020) 841–847.","mla":"Hartstein, Máté, et al. “Hard Antinodal Gap Revealed by Quantum Oscillations in the Pseudogap Regime of Underdoped High-Tc Superconductors.” Nature Physics, vol. 16, Springer Nature, 2020, pp. 841–47, doi:10.1038/s41567-020-0910-0.","chicago":"Hartstein, Máté, Yu Te Hsu, Kimberly A Modic, Juan Porras, Toshinao Loew, Matthieu Le Tacon, Huakun Zuo, et al. “Hard Antinodal Gap Revealed by Quantum Oscillations in the Pseudogap Regime of Underdoped High-Tc Superconductors.” Nature Physics. Springer Nature, 2020. https://doi.org/10.1038/s41567-020-0910-0."},"publication":"Nature Physics","page":"841-847","article_type":"letter_note","related_material":{"record":[{"relation":"research_data","status":"public","id":"9708"}]},"author":[{"first_name":"Máté","last_name":"Hartstein","full_name":"Hartstein, Máté"},{"full_name":"Hsu, Yu Te","last_name":"Hsu","first_name":"Yu Te"},{"id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic","full_name":"Modic, Kimberly A"},{"first_name":"Juan","last_name":"Porras","full_name":"Porras, Juan"},{"last_name":"Loew","first_name":"Toshinao","full_name":"Loew, Toshinao"},{"last_name":"Tacon","first_name":"Matthieu Le","full_name":"Tacon, Matthieu Le"},{"full_name":"Zuo, Huakun","first_name":"Huakun","last_name":"Zuo"},{"last_name":"Wang","first_name":"Jinhua","full_name":"Wang, Jinhua"},{"full_name":"Zhu, Zengwei","first_name":"Zengwei","last_name":"Zhu"},{"full_name":"Chan, Mun K.","last_name":"Chan","first_name":"Mun K."},{"first_name":"Ross D.","last_name":"Mcdonald","full_name":"Mcdonald, Ross D."},{"full_name":"Lonzarich, Gilbert G.","first_name":"Gilbert G.","last_name":"Lonzarich"},{"first_name":"Bernhard","last_name":"Keimer","full_name":"Keimer, Bernhard"},{"full_name":"Sebastian, Suchitra E.","first_name":"Suchitra E.","last_name":"Sebastian"},{"full_name":"Harrison, Neil","first_name":"Neil","last_name":"Harrison"}],"volume":16,"date_created":"2020-06-07T22:00:56Z","date_updated":"2023-08-21T07:06:49Z","year":"2020","acknowledgement":"M.H., Y.-T.H. and S.E.S. acknowledge support from the Royal Society, the Winton Programme for the Physics of Sustainability, EPSRC (studentship, grant no. EP/P024947/1 and EPSRC Strategic Equipment grant no. EP/M000524/1) and the European Research Council (grant no. 772891). S.E.S. acknowledges support from the Leverhulme Trust by way of the award of a Philip Leverhulme Prize. H.Z., J.W. and Z.Z. acknowledge support from the National Key Research and Development Program of China (grant no. 2016YFA0401704). A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation Cooperative Agreement no. DMR-1644779, the state of Florida and the US Department of Energy. Work performed by M.K.C., R.D.M. and N.H. was supported by the US DOE BES ‘Science of 100 T’ programme.","publisher":"Springer Nature","department":[{"_id":"KiMo"}],"publication_status":"published","publication_identifier":{"issn":["17452473"],"eissn":["17452481"]},"month":"08","doi":"10.1038/s41567-020-0910-0","language":[{"iso":"eng"}],"external_id":{"isi":["000535464400005"],"arxiv":["2005.14123"]},"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2005.14123"}],"oa":1,"isi":1,"quality_controlled":"1"},{"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"citation":{"ama":"Hartstein M, Hsu Y-T, Modic KA, et al. Accompanying dataset for “Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors.” 2020. doi:10.17863/cam.50169","ista":"Hartstein M, Hsu Y-T, Modic KA, Porras J, Loew T, Le Tacon M, Zuo H, Wang J, Zhu Z, Chan M, McDonald R, Lonzarich G, Keimer B, Sebastian S, Harrison N. 2020. Accompanying dataset for ‘Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors’, Apollo - University of Cambridge, 10.17863/cam.50169.","ieee":"M. Hartstein et al., “Accompanying dataset for ‘Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors.’” Apollo - University of Cambridge, 2020.","apa":"Hartstein, M., Hsu, Y.-T., Modic, K. A., Porras, J., Loew, T., Le Tacon, M., … Harrison, N. (2020). Accompanying dataset for “Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors.” Apollo - University of Cambridge. https://doi.org/10.17863/cam.50169","mla":"Hartstein, Mate, et al. Accompanying Dataset for “Hard Antinodal Gap Revealed by Quantum Oscillations in the Pseudogap Regime of Underdoped High-Tc Superconductors.” Apollo - University of Cambridge, 2020, doi:10.17863/cam.50169.","short":"M. Hartstein, Y.-T. Hsu, K.A. Modic, J. Porras, T. Loew, M. Le Tacon, H. Zuo, J. Wang, Z. Zhu, M. Chan, R. McDonald, G. Lonzarich, B. Keimer, S. Sebastian, N. Harrison, (2020).","chicago":"Hartstein, Mate, Yu-Te Hsu, Kimberly A Modic, Juan Porras, Toshinao Loew, Matthieu Le Tacon, Huakun Zuo, et al. “Accompanying Dataset for ‘Hard Antinodal Gap Revealed by Quantum Oscillations in the Pseudogap Regime of Underdoped High-Tc Superconductors.’” Apollo - University of Cambridge, 2020. https://doi.org/10.17863/cam.50169."},"main_file_link":[{"open_access":"1","url":"https://doi.org/10.17863/CAM.50169"}],"oa":1,"date_published":"2020-05-29T00:00:00Z","doi":"10.17863/cam.50169","day":"29","month":"05","has_accepted_license":"1","article_processing_charge":"No","year":"2020","_id":"9708","user_id":"6785fbc1-c503-11eb-8a32-93094b40e1cf","title":"Accompanying dataset for 'Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors'","status":"public","department":[{"_id":"KiMo"}],"publisher":"Apollo - University of Cambridge","author":[{"first_name":"Mate","last_name":"Hartstein","full_name":"Hartstein, Mate"},{"full_name":"Hsu, Yu-Te","last_name":"Hsu","first_name":"Yu-Te"},{"orcid":"0000-0001-9760-3147","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","last_name":"Modic","first_name":"Kimberly A","full_name":"Modic, Kimberly A"},{"full_name":"Porras, Juan","last_name":"Porras","first_name":"Juan"},{"full_name":"Loew, Toshinao","last_name":"Loew","first_name":"Toshinao"},{"last_name":"Le Tacon","first_name":"Matthieu","full_name":"Le Tacon, Matthieu"},{"full_name":"Zuo, Huakun","first_name":"Huakun","last_name":"Zuo"},{"full_name":"Wang, Jinhua","last_name":"Wang","first_name":"Jinhua"},{"first_name":"Zengwei","last_name":"Zhu","full_name":"Zhu, Zengwei"},{"first_name":"Mun","last_name":"Chan","full_name":"Chan, Mun"},{"full_name":"McDonald, Ross","last_name":"McDonald","first_name":"Ross"},{"last_name":"Lonzarich","first_name":"Gilbert","full_name":"Lonzarich, Gilbert"},{"full_name":"Keimer, Bernhard","last_name":"Keimer","first_name":"Bernhard"},{"first_name":"Suchitra","last_name":"Sebastian","full_name":"Sebastian, Suchitra"},{"full_name":"Harrison, Neil","first_name":"Neil","last_name":"Harrison"}],"related_material":{"record":[{"status":"public","relation":"used_in_publication","id":"7942"}]},"date_created":"2021-07-23T10:00:35Z","date_updated":"2023-08-21T07:06:48Z","oa_version":"Published Version","type":"research_data_reference","abstract":[{"text":"This research data supports 'Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors'. A Readme file for plotting each figure is provided.","lang":"eng"}]},{"has_accepted_license":"1","article_processing_charge":"No","day":"17","article_type":"original","citation":{"mla":"Shirer, Kent R., et al. “Out-of-Plane Transport in ZrSiS and ZrSiSe Microstructures.” APL Materials, vol. 7, no. 10, 101116, AIP, 2019, doi:10.1063/1.5124568.","short":"K.R. Shirer, K.A. Modic, T. Zimmerling, M.D. Bachmann, M. König, P.J.W. Moll, L. Schoop, A.P. Mackenzie, APL Materials 7 (2019).","chicago":"Shirer, Kent R., Kimberly A Modic, Tino Zimmerling, Maja D. Bachmann, Markus König, Philip J. W. Moll, Leslie Schoop, and Andrew P. Mackenzie. “Out-of-Plane Transport in ZrSiS and ZrSiSe Microstructures.” APL Materials. AIP, 2019. https://doi.org/10.1063/1.5124568.","ama":"Shirer KR, Modic KA, Zimmerling T, et al. Out-of-plane transport in ZrSiS and ZrSiSe microstructures. APL Materials. 2019;7(10). doi:10.1063/1.5124568","ista":"Shirer KR, Modic KA, Zimmerling T, Bachmann MD, König M, Moll PJW, Schoop L, Mackenzie AP. 2019. Out-of-plane transport in ZrSiS and ZrSiSe microstructures. APL Materials. 7(10), 101116.","ieee":"K. R. Shirer et al., “Out-of-plane transport in ZrSiS and ZrSiSe microstructures,” APL Materials, vol. 7, no. 10. AIP, 2019.","apa":"Shirer, K. R., Modic, K. A., Zimmerling, T., Bachmann, M. D., König, M., Moll, P. J. W., … Mackenzie, A. P. (2019). Out-of-plane transport in ZrSiS and ZrSiSe microstructures. APL Materials. AIP. https://doi.org/10.1063/1.5124568"},"publication":"APL Materials","date_published":"2019-10-17T00:00:00Z","type":"journal_article","issue":"10","abstract":[{"lang":"eng","text":"A recent class of topological nodal-line semimetals with the general formula MSiX (M = Zr, Hf and X = S, Se, Te) has attracted much experimental and theoretical interest due to their properties, particularly their large magnetoresistances and high carrier mobilities. The plateletlike nature of the MSiX crystals and their extremely low residual resistivities make measurements of the resistivity along the [001] direction extremely challenging. To accomplish such measurements, microstructures of single crystals were prepared using focused ion beam techniques. Microstructures prepared in this manner have very well-defined geometries and maintain their high crystal quality, verified by the observations of quantum oscillations. We present magnetoresistance and quantum oscillation data for currents applied along both [001] and [100] in ZrSiS and ZrSiSe, which are consistent with the nontrivial topology of the Dirac line-node, as determined by a measured π Berry phase. Surprisingly, we find that, despite the three dimensional nature of both the Fermi surfaces of ZrSiS and ZrSiSe, both the resistivity anisotropy under applied magnetic fields and the in-plane angular dependent magnetoresistance differ considerably between the two compounds. Finally, we discuss the role microstructuring can play in the study of these materials and our ability to make these microstructures free-standing."}],"intvolume":" 7","title":"Out-of-plane transport in ZrSiS and ZrSiSe microstructures","status":"public","ddc":["530"],"_id":"7055","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Published Version","file":[{"checksum":"142fe7b3e37d8e916071743bb194360d","date_updated":"2020-07-14T12:47:48Z","date_created":"2019-11-20T12:27:01Z","file_id":"7087","relation":"main_file","creator":"dernst","content_type":"application/pdf","file_size":2453220,"access_level":"open_access","file_name":"2019_APL_Shirer.pdf"}],"publication_identifier":{"issn":["2166-532X"]},"month":"10","quality_controlled":"1","oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"language":[{"iso":"eng"}],"doi":"10.1063/1.5124568","article_number":"101116","extern":"1","file_date_updated":"2020-07-14T12:47:48Z","publisher":"AIP","publication_status":"published","year":"2019","volume":7,"date_created":"2019-11-19T12:52:43Z","date_updated":"2021-01-12T08:11:35Z","author":[{"first_name":"Kent R.","last_name":"Shirer","full_name":"Shirer, Kent R."},{"id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic","full_name":"Modic, Kimberly A"},{"last_name":"Zimmerling","first_name":"Tino","full_name":"Zimmerling, Tino"},{"full_name":"Bachmann, Maja D.","first_name":"Maja D.","last_name":"Bachmann"},{"first_name":"Markus","last_name":"König","full_name":"König, Markus"},{"full_name":"Moll, Philip J. W.","last_name":"Moll","first_name":"Philip J. W."},{"full_name":"Schoop, Leslie","last_name":"Schoop","first_name":"Leslie"},{"full_name":"Mackenzie, Andrew P.","first_name":"Andrew P.","last_name":"Mackenzie"}]},{"quality_controlled":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1038/s41598-018-38161-7","month":"02","publication_identifier":{"issn":["2045-2322"]},"publication_status":"published","publisher":"Springer Nature","year":"2019","date_created":"2019-11-19T13:00:35Z","date_updated":"2021-01-12T08:11:36Z","volume":9,"author":[{"first_name":"Kimberly A","last_name":"Modic","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","full_name":"Modic, Kimberly A"},{"full_name":"Meng, Tobias","last_name":"Meng","first_name":"Tobias"},{"full_name":"Ronning, Filip","last_name":"Ronning","first_name":"Filip"},{"last_name":"Bauer","first_name":"Eric D.","full_name":"Bauer, Eric D."},{"full_name":"Moll, Philip J. W.","first_name":"Philip J. W.","last_name":"Moll"},{"full_name":"Ramshaw, B. J.","last_name":"Ramshaw","first_name":"B. J."}],"article_number":"2095","extern":"1","file_date_updated":"2020-07-14T12:47:48Z","article_type":"original","publication":"Scientific Reports","citation":{"chicago":"Modic, Kimberly A, Tobias Meng, Filip Ronning, Eric D. Bauer, Philip J. W. Moll, and B. J. Ramshaw. “Thermodynamic Signatures of Weyl Fermions in NbP.” Scientific Reports. Springer Nature, 2019. https://doi.org/10.1038/s41598-018-38161-7.","mla":"Modic, Kimberly A., et al. “Thermodynamic Signatures of Weyl Fermions in NbP.” Scientific Reports, vol. 9, no. 1, 2095, Springer Nature, 2019, doi:10.1038/s41598-018-38161-7.","short":"K.A. Modic, T. Meng, F. Ronning, E.D. Bauer, P.J.W. Moll, B.J. Ramshaw, Scientific Reports 9 (2019).","ista":"Modic KA, Meng T, Ronning F, Bauer ED, Moll PJW, Ramshaw BJ. 2019. Thermodynamic signatures of Weyl fermions in NbP. Scientific Reports. 9(1), 2095.","ieee":"K. A. Modic, T. Meng, F. Ronning, E. D. Bauer, P. J. W. Moll, and B. J. Ramshaw, “Thermodynamic signatures of Weyl fermions in NbP,” Scientific Reports, vol. 9, no. 1. Springer Nature, 2019.","apa":"Modic, K. A., Meng, T., Ronning, F., Bauer, E. D., Moll, P. J. W., & Ramshaw, B. J. (2019). Thermodynamic signatures of Weyl fermions in NbP. Scientific Reports. Springer Nature. https://doi.org/10.1038/s41598-018-38161-7","ama":"Modic KA, Meng T, Ronning F, Bauer ED, Moll PJW, Ramshaw BJ. Thermodynamic signatures of Weyl fermions in NbP. Scientific Reports. 2019;9(1). doi:10.1038/s41598-018-38161-7"},"date_published":"2019-02-14T00:00:00Z","day":"14","has_accepted_license":"1","article_processing_charge":"No","status":"public","title":"Thermodynamic signatures of Weyl fermions in NbP","ddc":["530"],"intvolume":" 9","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"7057","oa_version":"Published Version","file":[{"file_name":"2019_ScientificReports_Modic.pdf","access_level":"open_access","creator":"dernst","content_type":"application/pdf","file_size":3256400,"file_id":"7086","relation":"main_file","date_updated":"2020-07-14T12:47:48Z","date_created":"2019-11-20T12:24:13Z","checksum":"3b5a7b316e1ff22aa0f89e8d1f1ace91"}],"type":"journal_article","abstract":[{"lang":"eng","text":"We present a high magnetic field study of NbP—a member of the monopnictide Weyl semimetal (WSM) family. While the monoarsenides (NbAs and TaAs) have topologically distinct left and right-handed Weyl fermi surfaces, NbP is argued to be “topologically trivial” due to the fact that all pairs of Weyl nodes are encompassed by a single Fermi surface. We use torque magnetometry to measure the magnetic response of NbP up to 60 tesla and uncover a Berry paramagnetic response, characteristic of the topological Weyl nodes, across the entire field range. At the quantum limit B* (≈32 T), τ/B experiences a change in slope when the chemical potential enters the last Landau level. Our calculations confirm that this magnetic response arises from band topology of the Weyl pocket, even though the Fermi surface encompasses both Weyl nodes at zero magnetic field. We also find that the magnetic field pulls the chemical potential to the chiral n = 0 Landau level in the quantum limit, providing a disorder-free way of accessing chiral Weyl fermions in systems that are “not quite” WSMs in zero magnetic field."}],"issue":"1"},{"publication_identifier":{"issn":["0953-8984"],"eissn":["1361-648X"]},"month":"09","external_id":{"arxiv":["1905.08640"]},"oa":1,"main_file_link":[{"url":"https://arxiv.org/abs/1905.08640","open_access":"1"}],"quality_controlled":"1","doi":"10.1088/1361-648x/ab3b43","language":[{"iso":"eng"}],"article_number":"485705","extern":"1","year":"2019","publisher":"IOP Publishing","publication_status":"published","author":[{"first_name":"Edoardo","last_name":"Martino","full_name":"Martino, Edoardo"},{"last_name":"Bachmann","first_name":"Maja D","full_name":"Bachmann, Maja D"},{"first_name":"Lidia","last_name":"Rossi","full_name":"Rossi, Lidia"},{"orcid":"0000-0001-9760-3147","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","last_name":"Modic","first_name":"Kimberly A","full_name":"Modic, Kimberly A"},{"last_name":"Zivkovic","first_name":"Ivica","full_name":"Zivkovic, Ivica"},{"first_name":"Henrik M","last_name":"Rønnow","full_name":"Rønnow, Henrik M"},{"last_name":"Moll","first_name":"Philip J W","full_name":"Moll, Philip J W"},{"last_name":"Akrap","first_name":"Ana","full_name":"Akrap, Ana"},{"full_name":"Forró, László","first_name":"László","last_name":"Forró"},{"first_name":"Sergiy","last_name":"Katrych","full_name":"Katrych, Sergiy"}],"volume":31,"date_created":"2019-11-19T12:56:17Z","date_updated":"2021-01-12T08:11:35Z","article_processing_charge":"No","day":"03","citation":{"mla":"Martino, Edoardo, et al. “Persistent Antiferromagnetic Order in Heavily Overdoped Ca1−x La x FeAs2.” Journal of Physics: Condensed Matter, vol. 31, no. 48, 485705, IOP Publishing, 2019, doi:10.1088/1361-648x/ab3b43.","short":"E. Martino, M.D. Bachmann, L. Rossi, K.A. Modic, I. Zivkovic, H.M. Rønnow, P.J.W. Moll, A. Akrap, L. Forró, S. Katrych, Journal of Physics: Condensed Matter 31 (2019).","chicago":"Martino, Edoardo, Maja D Bachmann, Lidia Rossi, Kimberly A Modic, Ivica Zivkovic, Henrik M Rønnow, Philip J W Moll, Ana Akrap, László Forró, and Sergiy Katrych. “Persistent Antiferromagnetic Order in Heavily Overdoped Ca1−x La x FeAs2.” Journal of Physics: Condensed Matter. IOP Publishing, 2019. https://doi.org/10.1088/1361-648x/ab3b43.","ama":"Martino E, Bachmann MD, Rossi L, et al. Persistent antiferromagnetic order in heavily overdoped Ca1−x La x FeAs2. Journal of Physics: Condensed Matter. 2019;31(48). doi:10.1088/1361-648x/ab3b43","ista":"Martino E, Bachmann MD, Rossi L, Modic KA, Zivkovic I, Rønnow HM, Moll PJW, Akrap A, Forró L, Katrych S. 2019. Persistent antiferromagnetic order in heavily overdoped Ca1−x La x FeAs2. Journal of Physics: Condensed Matter. 31(48), 485705.","apa":"Martino, E., Bachmann, M. D., Rossi, L., Modic, K. A., Zivkovic, I., Rønnow, H. M., … Katrych, S. (2019). Persistent antiferromagnetic order in heavily overdoped Ca1−x La x FeAs2. Journal of Physics: Condensed Matter. IOP Publishing. https://doi.org/10.1088/1361-648x/ab3b43","ieee":"E. Martino et al., “Persistent antiferromagnetic order in heavily overdoped Ca1−x La x FeAs2,” Journal of Physics: Condensed Matter, vol. 31, no. 48. IOP Publishing, 2019."},"publication":"Journal of Physics: Condensed Matter","article_type":"original","date_published":"2019-09-03T00:00:00Z","type":"journal_article","issue":"48","abstract":[{"lang":"eng","text":"In the Ca1−x La x FeAs2 (1 1 2) family of pnictide superconductors, we have investigated a highly overdoped composition (x = 0.56), prepared by a high-pressure, high-temperature synthesis. Magnetic measurements show an antiferromagnetic transition at T N = 120 K, well above the one at lower doping (0.15 < x < 0.27).\r\n\r\nBelow the onset of long-range magnetic order at T N, the electrical resistivity is strongly reduced and is dominated by electron–electron interactions, as evident from its temperature dependence. The Seebeck coefficient shows a clear metallic behavior as in narrow band conductors. The temperature dependence of the Hall coefficient and the violation of Kohler's rule agree with the multiband character of the material. No superconductivity was observed down to 1.8 K. The success of the high-pressure synthesis encourages further investigations of the so far only partially explored phase diagram in this family of Iron-based high temperature superconductors.\r\n"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"7056","intvolume":" 31","status":"public","title":"Persistent antiferromagnetic order in heavily overdoped Ca1−x La x FeAs2","oa_version":"Preprint"},{"date_updated":"2021-01-12T08:11:46Z","date_created":"2019-11-19T13:55:58Z","oa_version":"None","volume":366,"author":[{"full_name":"Bachmann, Maja D.","first_name":"Maja D.","last_name":"Bachmann"},{"last_name":"Ferguson","first_name":"G. M.","full_name":"Ferguson, G. M."},{"full_name":"Theuss, Florian","last_name":"Theuss","first_name":"Florian"},{"last_name":"Meng","first_name":"Tobias","full_name":"Meng, Tobias"},{"first_name":"Carsten","last_name":"Putzke","full_name":"Putzke, Carsten"},{"full_name":"Helm, Toni","last_name":"Helm","first_name":"Toni"},{"full_name":"Shirer, K. R.","last_name":"Shirer","first_name":"K. R."},{"full_name":"Li, You-Sheng","first_name":"You-Sheng","last_name":"Li"},{"full_name":"Modic, Kimberly A","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic"},{"full_name":"Nicklas, Michael","first_name":"Michael","last_name":"Nicklas"},{"full_name":"König, Markus","last_name":"König","first_name":"Markus"},{"last_name":"Low","first_name":"D.","full_name":"Low, D."},{"last_name":"Ghosh","first_name":"Sayak","full_name":"Ghosh, Sayak"},{"first_name":"Andrew P.","last_name":"Mackenzie","full_name":"Mackenzie, Andrew P."},{"full_name":"Arnold, Frank","last_name":"Arnold","first_name":"Frank"},{"full_name":"Hassinger, Elena","last_name":"Hassinger","first_name":"Elena"},{"full_name":"McDonald, Ross D.","last_name":"McDonald","first_name":"Ross D."},{"last_name":"Winter","first_name":"Laurel E.","full_name":"Winter, Laurel E."},{"full_name":"Bauer, Eric D.","first_name":"Eric D.","last_name":"Bauer"},{"full_name":"Ronning, Filip","last_name":"Ronning","first_name":"Filip"},{"last_name":"Ramshaw","first_name":"B. J.","full_name":"Ramshaw, B. J."},{"full_name":"Nowack, Katja C.","first_name":"Katja C.","last_name":"Nowack"},{"last_name":"Moll","first_name":"Philip J. W.","full_name":"Moll, Philip J. W."}],"title":"Spatial control of heavy-fermion superconductivity in CeIrIn5","status":"public","publication_status":"published","publisher":"AAAS","intvolume":" 366","_id":"7082","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2019","extern":"1","abstract":[{"lang":"eng","text":"Although crystals of strongly correlated metals exhibit a diverse set of electronic ground states, few approaches exist for spatially modulating their properties. In this study, we demonstrate disorder-free control, on the micrometer scale, over the superconducting state in samples of the heavy-fermion superconductor CeIrIn5. We pattern crystals by focused ion beam milling to tailor the boundary conditions for the elastic deformation upon thermal contraction during cooling. The resulting nonuniform strain fields induce complex patterns of superconductivity, owing to the strong dependence of the transition temperature on the strength and direction of strain. These results showcase a generic approach to manipulating electronic order on micrometer length scales in strongly correlated matter without compromising the cleanliness, stoichiometry, or mean free path."}],"issue":"6462","type":"journal_article","language":[{"iso":"eng"}],"date_published":"2019-10-11T00:00:00Z","doi":"10.1126/science.aao6640","article_type":"original","quality_controlled":"1","page":"221-226","publication":"Science","citation":{"mla":"Bachmann, Maja D., et al. “Spatial Control of Heavy-Fermion Superconductivity in CeIrIn5.” Science, vol. 366, no. 6462, AAAS, 2019, pp. 221–26, doi:10.1126/science.aao6640.","short":"M.D. Bachmann, G.M. Ferguson, F. Theuss, T. Meng, C. Putzke, T. Helm, K.R. Shirer, Y.-S. Li, K.A. Modic, M. Nicklas, M. König, D. Low, S. Ghosh, A.P. Mackenzie, F. Arnold, E. Hassinger, R.D. McDonald, L.E. Winter, E.D. Bauer, F. Ronning, B.J. Ramshaw, K.C. Nowack, P.J.W. Moll, Science 366 (2019) 221–226.","chicago":"Bachmann, Maja D., G. M. Ferguson, Florian Theuss, Tobias Meng, Carsten Putzke, Toni Helm, K. R. Shirer, et al. “Spatial Control of Heavy-Fermion Superconductivity in CeIrIn5.” Science. AAAS, 2019. https://doi.org/10.1126/science.aao6640.","ama":"Bachmann MD, Ferguson GM, Theuss F, et al. Spatial control of heavy-fermion superconductivity in CeIrIn5. Science. 2019;366(6462):221-226. doi:10.1126/science.aao6640","ista":"Bachmann MD, Ferguson GM, Theuss F, Meng T, Putzke C, Helm T, Shirer KR, Li Y-S, Modic KA, Nicklas M, König M, Low D, Ghosh S, Mackenzie AP, Arnold F, Hassinger E, McDonald RD, Winter LE, Bauer ED, Ronning F, Ramshaw BJ, Nowack KC, Moll PJW. 2019. Spatial control of heavy-fermion superconductivity in CeIrIn5. Science. 366(6462), 221–226.","apa":"Bachmann, M. D., Ferguson, G. M., Theuss, F., Meng, T., Putzke, C., Helm, T., … Moll, P. J. W. (2019). Spatial control of heavy-fermion superconductivity in CeIrIn5. Science. AAAS. https://doi.org/10.1126/science.aao6640","ieee":"M. D. Bachmann et al., “Spatial control of heavy-fermion superconductivity in CeIrIn5,” Science, vol. 366, no. 6462. AAAS, pp. 221–226, 2019."},"day":"11","month":"10","article_processing_charge":"No","publication_identifier":{"issn":["0036-8075"],"eissn":["1095-9203"]}},{"type":"journal_article","abstract":[{"lang":"eng","text":"The high-pressure synthesis and incommensurately modulated structure are reported for the new compound Sr2Pt8−xAs, with x = 0.715 (5). The structure consists of Sr2Pt3As layers alternating with Pt-only corrugated grids. Ab initio calculations predict a metallic character with a dominant role of the Pt d electrons. The electrical resistivity (ρ) and Seebeck coefficient confirm the metallic character, but surprisingly, ρ showed a near-flat temperature dependence. This observation fits the description of the Mooij correlation for electrical resistivity in disordered metals, originally developed for statistically distributed point defects. The discussed material has a long-range crystallographic order, but the high concentration of Pt vacancies, incommensurately ordered, strongly influences the electronic conduction properties. This result extends the range of validity of the Mooij correlation to long-range ordered incommensurately modulated vacancies. Motivated by the layered structure, the resistivity anisotropy was measured in a focused-ion-beam micro-fabricated well oriented single crystal. A low resistivity anisotropy indicates that the layers are electrically coupled and conduction channels along different directions are intermixed."}],"issue":"4","_id":"7063","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","ddc":["530"],"title":"Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity","status":"public","intvolume":" 5","oa_version":"Published Version","file":[{"access_level":"open_access","file_name":"2018_IUCrJ_Martino.pdf","content_type":"application/pdf","file_size":1563353,"creator":"dernst","relation":"main_file","file_id":"7090","checksum":"5c6180c7d19da599dd50a067eb2efd50","date_updated":"2020-07-14T12:47:48Z","date_created":"2019-11-20T14:00:27Z"}],"day":"01","has_accepted_license":"1","article_processing_charge":"No","publication":"IUCrJ","citation":{"ieee":"E. Martino et al., “Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity,” IUCrJ, vol. 5, no. 4. International Union of Crystallography (IUCr), pp. 470–477, 2018.","apa":"Martino, E., Arakcheeva, A., Autès, G., Pisoni, A., Bachmann, M. D., Modic, K. A., … Katrych, S. (2018). Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity. IUCrJ. International Union of Crystallography (IUCr). https://doi.org/10.1107/s2052252518007303","ista":"Martino E, Arakcheeva A, Autès G, Pisoni A, Bachmann MD, Modic KA, Helm T, Yazyev OV, Moll PJW, Forró L, Katrych S. 2018. Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity. IUCrJ. 5(4), 470–477.","ama":"Martino E, Arakcheeva A, Autès G, et al. Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity. IUCrJ. 2018;5(4):470-477. doi:10.1107/s2052252518007303","chicago":"Martino, Edoardo, Alla Arakcheeva, Gabriel Autès, Andrea Pisoni, Maja D. Bachmann, Kimberly A Modic, Toni Helm, et al. “Sr2Pt8−xAs: A Layered Incommensurately Modulated Metal with Saturated Resistivity.” IUCrJ. International Union of Crystallography (IUCr), 2018. https://doi.org/10.1107/s2052252518007303.","short":"E. Martino, A. Arakcheeva, G. Autès, A. Pisoni, M.D. Bachmann, K.A. Modic, T. Helm, O.V. Yazyev, P.J.W. Moll, L. Forró, S. Katrych, IUCrJ 5 (2018) 470–477.","mla":"Martino, Edoardo, et al. “Sr2Pt8−xAs: A Layered Incommensurately Modulated Metal with Saturated Resistivity.” IUCrJ, vol. 5, no. 4, International Union of Crystallography (IUCr), 2018, pp. 470–77, doi:10.1107/s2052252518007303."},"article_type":"original","page":"470-477","date_published":"2018-07-01T00:00:00Z","file_date_updated":"2020-07-14T12:47:48Z","extern":"1","year":"2018","publication_status":"published","publisher":"International Union of Crystallography (IUCr)","author":[{"full_name":"Martino, Edoardo","first_name":"Edoardo","last_name":"Martino"},{"full_name":"Arakcheeva, Alla","first_name":"Alla","last_name":"Arakcheeva"},{"last_name":"Autès","first_name":"Gabriel","full_name":"Autès, Gabriel"},{"first_name":"Andrea","last_name":"Pisoni","full_name":"Pisoni, Andrea"},{"last_name":"Bachmann","first_name":"Maja D.","full_name":"Bachmann, Maja D."},{"full_name":"Modic, Kimberly A","last_name":"Modic","first_name":"Kimberly A","orcid":"0000-0001-9760-3147","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425"},{"first_name":"Toni","last_name":"Helm","full_name":"Helm, Toni"},{"last_name":"Yazyev","first_name":"Oleg V.","full_name":"Yazyev, Oleg V."},{"full_name":"Moll, Philip J. W.","last_name":"Moll","first_name":"Philip J. W."},{"full_name":"Forró, László","last_name":"Forró","first_name":"László"},{"first_name":"Sergiy","last_name":"Katrych","full_name":"Katrych, Sergiy"}],"date_created":"2019-11-19T13:11:15Z","date_updated":"2021-01-12T08:11:38Z","volume":5,"month":"07","publication_identifier":{"eissn":["2052-2525"]},"oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"quality_controlled":"1","doi":"10.1107/s2052252518007303","language":[{"iso":"eng"}]},{"year":"2018","publication_status":"published","publisher":"Springer Nature","author":[{"first_name":"B. J.","last_name":"Ramshaw","full_name":"Ramshaw, B. J."},{"full_name":"Modic, Kimberly A","orcid":"0000-0001-9760-3147","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","last_name":"Modic","first_name":"Kimberly A"},{"first_name":"Arkady","last_name":"Shekhter","full_name":"Shekhter, Arkady"},{"last_name":"Zhang","first_name":"Yi","full_name":"Zhang, Yi"},{"first_name":"Eun-Ah","last_name":"Kim","full_name":"Kim, Eun-Ah"},{"full_name":"Moll, Philip J. W.","first_name":"Philip J. W.","last_name":"Moll"},{"full_name":"Bachmann, Maja D.","last_name":"Bachmann","first_name":"Maja D."},{"full_name":"Chan, M. K.","first_name":"M. K.","last_name":"Chan"},{"last_name":"Betts","first_name":"J. B.","full_name":"Betts, J. B."},{"last_name":"Balakirev","first_name":"F.","full_name":"Balakirev, F."},{"last_name":"Migliori","first_name":"A.","full_name":"Migliori, A."},{"full_name":"Ghimire, N. J.","last_name":"Ghimire","first_name":"N. J."},{"full_name":"Bauer, E. D.","first_name":"E. D.","last_name":"Bauer"},{"full_name":"Ronning, F.","last_name":"Ronning","first_name":"F."},{"last_name":"McDonald","first_name":"R. D.","full_name":"McDonald, R. D."}],"date_created":"2019-11-19T13:10:33Z","date_updated":"2021-01-12T08:11:38Z","volume":9,"article_number":"2217","file_date_updated":"2020-07-14T12:47:48Z","extern":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"quality_controlled":"1","doi":"10.1038/s41467-018-04542-9","language":[{"iso":"eng"}],"month":"06","publication_identifier":{"issn":["2041-1723"]},"_id":"7062","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Quantum limit transport and destruction of the Weyl nodes in TaAs","status":"public","ddc":["530"],"intvolume":" 9","file":[{"checksum":"9c53f9a1f06a4d83d5fe879d2478b7d7","date_updated":"2020-07-14T12:47:48Z","date_created":"2019-11-20T13:55:44Z","file_id":"7089","relation":"main_file","creator":"dernst","file_size":1794797,"content_type":"application/pdf","access_level":"open_access","file_name":"2018_NatureComm_Ramshaw.pdf"}],"oa_version":"Published Version","type":"journal_article","abstract":[{"lang":"eng","text":"Weyl fermions are a recently discovered ingredient for correlated states of electronic matter. A key difficulty has been that real materials also contain non-Weyl quasiparticles, and disentangling the experimental signatures has proven challenging. Here we use magnetic fields up to 95 T to drive the Weyl semimetal TaAs far into its quantum limit, where only the purely chiral 0th Landau levels of the Weyl fermions are occupied. We find the electrical resistivity to be nearly independent of magnetic field up to 50 T: unusual for conventional metals but consistent with the chiral anomaly for Weyl fermions. Above 50 T we observe a two-order-of-magnitude increase in resistivity, indicating that a gap opens in the chiral Landau levels. Above 80 T we observe strong ultrasonic attenuation below 2 K, suggesting a mesoscopically textured state of matter. These results point the way to inducing new correlated states of matter in the quantum limit of Weyl semimetals."}],"issue":"1","publication":"Nature Communications","citation":{"chicago":"Ramshaw, B. J., Kimberly A Modic, Arkady Shekhter, Yi Zhang, Eun-Ah Kim, Philip J. W. Moll, Maja D. Bachmann, et al. “Quantum Limit Transport and Destruction of the Weyl Nodes in TaAs.” Nature Communications. Springer Nature, 2018. https://doi.org/10.1038/s41467-018-04542-9.","mla":"Ramshaw, B. J., et al. “Quantum Limit Transport and Destruction of the Weyl Nodes in TaAs.” Nature Communications, vol. 9, no. 1, 2217, Springer Nature, 2018, doi:10.1038/s41467-018-04542-9.","short":"B.J. Ramshaw, K.A. Modic, A. Shekhter, Y. Zhang, E.-A. Kim, P.J.W. Moll, M.D. Bachmann, M.K. Chan, J.B. Betts, F. Balakirev, A. Migliori, N.J. Ghimire, E.D. Bauer, F. Ronning, R.D. McDonald, Nature Communications 9 (2018).","ista":"Ramshaw BJ, Modic KA, Shekhter A, Zhang Y, Kim E-A, Moll PJW, Bachmann MD, Chan MK, Betts JB, Balakirev F, Migliori A, Ghimire NJ, Bauer ED, Ronning F, McDonald RD. 2018. Quantum limit transport and destruction of the Weyl nodes in TaAs. Nature Communications. 9(1), 2217.","ieee":"B. J. Ramshaw et al., “Quantum limit transport and destruction of the Weyl nodes in TaAs,” Nature Communications, vol. 9, no. 1. Springer Nature, 2018.","apa":"Ramshaw, B. J., Modic, K. A., Shekhter, A., Zhang, Y., Kim, E.-A., Moll, P. J. W., … McDonald, R. D. (2018). Quantum limit transport and destruction of the Weyl nodes in TaAs. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-018-04542-9","ama":"Ramshaw BJ, Modic KA, Shekhter A, et al. Quantum limit transport and destruction of the Weyl nodes in TaAs. Nature Communications. 2018;9(1). doi:10.1038/s41467-018-04542-9"},"article_type":"original","date_published":"2018-06-07T00:00:00Z","day":"07","article_processing_charge":"No","has_accepted_license":"1"},{"author":[{"full_name":"Modic, Kimberly A","orcid":"0000-0001-9760-3147","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","last_name":"Modic","first_name":"Kimberly A"},{"full_name":"Bachmann, Maja D.","first_name":"Maja D.","last_name":"Bachmann"},{"first_name":"B. J.","last_name":"Ramshaw","full_name":"Ramshaw, B. J."},{"first_name":"F.","last_name":"Arnold","full_name":"Arnold, F."},{"full_name":"Shirer, K. R.","first_name":"K. R.","last_name":"Shirer"},{"full_name":"Estry, Amelia","first_name":"Amelia","last_name":"Estry"},{"last_name":"Betts","first_name":"J. B.","full_name":"Betts, J. B."},{"first_name":"Nirmal J.","last_name":"Ghimire","full_name":"Ghimire, Nirmal J."},{"full_name":"Bauer, E. D.","last_name":"Bauer","first_name":"E. D."},{"first_name":"Marcus","last_name":"Schmidt","full_name":"Schmidt, Marcus"},{"full_name":"Baenitz, Michael","last_name":"Baenitz","first_name":"Michael"},{"full_name":"Svanidze, E.","first_name":"E.","last_name":"Svanidze"},{"first_name":"Ross D.","last_name":"McDonald","full_name":"McDonald, Ross D."},{"full_name":"Shekhter, Arkady","first_name":"Arkady","last_name":"Shekhter"},{"first_name":"Philip J. W.","last_name":"Moll","full_name":"Moll, Philip J. W."}],"date_created":"2019-11-19T13:02:20Z","date_updated":"2021-01-12T08:11:37Z","volume":9,"year":"2018","publication_status":"published","publisher":"Springer Nature","file_date_updated":"2020-07-14T12:47:48Z","extern":"1","doi":"10.1038/s41467-018-06412-w","language":[{"iso":"eng"}],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"quality_controlled":"1","month":"09","publication_identifier":{"issn":["2041-1723"]},"file":[{"checksum":"46a313c816e66899d4dad2cf3583e5b0","date_created":"2019-11-20T12:48:58Z","date_updated":"2020-07-14T12:47:48Z","file_id":"7088","relation":"main_file","creator":"dernst","content_type":"application/pdf","file_size":1257681,"access_level":"open_access","file_name":"2018_NatureComm_Modic.pdf"}],"oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"7059","status":"public","title":"Resonant torsion magnetometry in anisotropic quantum materials","ddc":["530"],"intvolume":" 9","abstract":[{"text":"Unusual behavior in quantum materials commonly arises from their effective low-dimensional physics, reflecting the underlying anisotropy in the spin and charge degrees of freedom. Here we introduce the magnetotropic coefficient k = ∂2F/∂θ2, the second derivative of the free energy F with respect to the magnetic field orientation θ in the crystal. We show that the magnetotropic coefficient can be quantitatively determined from a shift in the resonant frequency of a commercially available atomic force microscopy cantilever under magnetic field. This detection method enables part per 100 million sensitivity and the ability to measure magnetic anisotropy in nanogram-scale samples, as demonstrated on the Weyl semimetal NbP. Measurement of the magnetotropic coefficient in the spin-liquid candidate RuCl3 highlights its sensitivity to anisotropic phase transitions and allows a quantitative comparison to other thermodynamic coefficients via the Ehrenfest relations.","lang":"eng"}],"issue":"1","type":"journal_article","date_published":"2018-09-28T00:00:00Z","publication":"Nature Communications","citation":{"ama":"Modic KA, Bachmann MD, Ramshaw BJ, et al. Resonant torsion magnetometry in anisotropic quantum materials. Nature Communications. 2018;9(1):3975. doi:10.1038/s41467-018-06412-w","ista":"Modic KA, Bachmann MD, Ramshaw BJ, Arnold F, Shirer KR, Estry A, Betts JB, Ghimire NJ, Bauer ED, Schmidt M, Baenitz M, Svanidze E, McDonald RD, Shekhter A, Moll PJW. 2018. Resonant torsion magnetometry in anisotropic quantum materials. Nature Communications. 9(1), 3975.","apa":"Modic, K. A., Bachmann, M. D., Ramshaw, B. J., Arnold, F., Shirer, K. R., Estry, A., … Moll, P. J. W. (2018). Resonant torsion magnetometry in anisotropic quantum materials. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-018-06412-w","ieee":"K. A. Modic et al., “Resonant torsion magnetometry in anisotropic quantum materials,” Nature Communications, vol. 9, no. 1. Springer Nature, p. 3975, 2018.","mla":"Modic, Kimberly A., et al. “Resonant Torsion Magnetometry in Anisotropic Quantum Materials.” Nature Communications, vol. 9, no. 1, Springer Nature, 2018, p. 3975, doi:10.1038/s41467-018-06412-w.","short":"K.A. Modic, M.D. Bachmann, B.J. Ramshaw, F. Arnold, K.R. Shirer, A. Estry, J.B. Betts, N.J. Ghimire, E.D. Bauer, M. Schmidt, M. Baenitz, E. Svanidze, R.D. McDonald, A. Shekhter, P.J.W. Moll, Nature Communications 9 (2018) 3975.","chicago":"Modic, Kimberly A, Maja D. Bachmann, B. J. Ramshaw, F. Arnold, K. R. Shirer, Amelia Estry, J. B. Betts, et al. “Resonant Torsion Magnetometry in Anisotropic Quantum Materials.” Nature Communications. Springer Nature, 2018. https://doi.org/10.1038/s41467-018-06412-w."},"article_type":"original","page":"3975","day":"28","has_accepted_license":"1","article_processing_charge":"No"},{"extern":"1","article_number":"205110 ","author":[{"full_name":"Modic, Kimberly A","orcid":"0000-0001-9760-3147","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","last_name":"Modic","first_name":"Kimberly A"},{"full_name":"Ramshaw, B. J.","first_name":"B. J.","last_name":"Ramshaw"},{"full_name":"Shekhter, A.","first_name":"A.","last_name":"Shekhter"},{"full_name":"Varma, C. M.","last_name":"Varma","first_name":"C. M."}],"date_created":"2019-11-19T13:01:31Z","date_updated":"2021-01-12T08:11:36Z","volume":98,"year":"2018","publication_status":"published","publisher":"APS","month":"11","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"doi":"10.1103/physrevb.98.205110","language":[{"iso":"eng"}],"oa":1,"external_id":{"arxiv":["1807.06637"]},"main_file_link":[{"url":"https://arxiv.org/abs/1807.06637","open_access":"1"}],"quality_controlled":"1","abstract":[{"text":"We examine recent magnetic torque measurements in two compounds, γ−Li2IrO3 and RuCl3, which have been discussed as possible realizations of the Kitaev model. The analysis of the reported discontinuity in torque, as an external magnetic field is rotated across the c axis in both crystals, suggests that they have a translationally invariant chiral spin order of the form ⟨Si⋅(Sj×Sk)⟩≠0 in the ground state and persisting over a very wide range of magnetic field and temperature. An extraordinary |B|B2 dependence of the torque for small fields, beside the usual B2 part, is predicted by the chiral spin order. Data for small fields are available for γ−Li2IrO3 and are found to be consistent with the prediction upon further analysis. Other experiments such as inelastic scattering and thermal Hall effect and several questions raised by the discovery of chiral spin order, including its topological consequences, are discussed.","lang":"eng"}],"issue":"20","type":"journal_article","oa_version":"Preprint","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"7058","status":"public","title":"Chiral spin order in some purported Kitaev spin-liquid compounds","intvolume":" 98","day":"05","article_processing_charge":"No","date_published":"2018-11-05T00:00:00Z","publication":"Physical Review B","citation":{"chicago":"Modic, Kimberly A, B. J. Ramshaw, A. Shekhter, and C. M. Varma. “Chiral Spin Order in Some Purported Kitaev Spin-Liquid Compounds.” Physical Review B. APS, 2018. https://doi.org/10.1103/physrevb.98.205110.","mla":"Modic, Kimberly A., et al. “Chiral Spin Order in Some Purported Kitaev Spin-Liquid Compounds.” Physical Review B, vol. 98, no. 20, 205110, APS, 2018, doi:10.1103/physrevb.98.205110.","short":"K.A. Modic, B.J. Ramshaw, A. Shekhter, C.M. Varma, Physical Review B 98 (2018).","ista":"Modic KA, Ramshaw BJ, Shekhter A, Varma CM. 2018. Chiral spin order in some purported Kitaev spin-liquid compounds. Physical Review B. 98(20), 205110.","ieee":"K. A. Modic, B. J. Ramshaw, A. Shekhter, and C. M. Varma, “Chiral spin order in some purported Kitaev spin-liquid compounds,” Physical Review B, vol. 98, no. 20. APS, 2018.","apa":"Modic, K. A., Ramshaw, B. J., Shekhter, A., & Varma, C. M. (2018). Chiral spin order in some purported Kitaev spin-liquid compounds. Physical Review B. APS. https://doi.org/10.1103/physrevb.98.205110","ama":"Modic KA, Ramshaw BJ, Shekhter A, Varma CM. Chiral spin order in some purported Kitaev spin-liquid compounds. Physical Review B. 2018;98(20). doi:10.1103/physrevb.98.205110"},"article_type":"original"},{"_id":"7060","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2018","intvolume":" 361","publisher":"AAAS","title":"Scale-invariant magnetoresistance in a cuprate superconductor","status":"public","publication_status":"published","author":[{"full_name":"Giraldo-Gallo, P.","last_name":"Giraldo-Gallo","first_name":"P."},{"last_name":"Galvis","first_name":"J. A.","full_name":"Galvis, J. A."},{"full_name":"Stegen, Z.","first_name":"Z.","last_name":"Stegen"},{"full_name":"Modic, Kimberly A","first_name":"Kimberly A","last_name":"Modic","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147"},{"full_name":"Balakirev, F. F.","first_name":"F. F.","last_name":"Balakirev"},{"full_name":"Betts, J. B.","last_name":"Betts","first_name":"J. B."},{"first_name":"X.","last_name":"Lian","full_name":"Lian, X."},{"full_name":"Moir, C.","first_name":"C.","last_name":"Moir"},{"full_name":"Riggs, S. C.","first_name":"S. C.","last_name":"Riggs"},{"last_name":"Wu","first_name":"J.","full_name":"Wu, J."},{"first_name":"A. T.","last_name":"Bollinger","full_name":"Bollinger, A. T."},{"last_name":"He","first_name":"X.","full_name":"He, X."},{"last_name":"Božović","first_name":"I.","full_name":"Božović, I."},{"first_name":"B. J.","last_name":"Ramshaw","full_name":"Ramshaw, B. J."},{"full_name":"McDonald, R. D.","last_name":"McDonald","first_name":"R. D."},{"full_name":"Boebinger, G. S.","first_name":"G. S.","last_name":"Boebinger"},{"last_name":"Shekhter","first_name":"A.","full_name":"Shekhter, A."}],"oa_version":"None","volume":361,"date_created":"2019-11-19T13:03:16Z","date_updated":"2021-01-12T08:11:37Z","type":"journal_article","issue":"6401","abstract":[{"text":"The anomalous metallic state in the high-temperature superconducting cuprates is masked by superconductivity near a quantum critical point. Applying high magnetic fields to suppress superconductivity has enabled detailed studies of the normal state, yet the direct effect of strong magnetic fields on the metallic state is poorly understood. We report the high-field magnetoresistance of thin-film La2–xSrxCuO4 cuprate in the vicinity of the critical doping, 0.161 ≤ p ≤ 0.190. We find that the metallic state exposed by suppressing superconductivity is characterized by magnetoresistance that is linear in magnetic fields up to 80 tesla. The magnitude of the linear-in-field resistivity mirrors the magnitude and doping evolution of the well-known linear-in-temperature resistivity that has been associated with quantum criticality in high-temperature superconductors.","lang":"eng"}],"extern":"1","citation":{"apa":"Giraldo-Gallo, P., Galvis, J. A., Stegen, Z., Modic, K. A., Balakirev, F. F., Betts, J. B., … Shekhter, A. (2018). Scale-invariant magnetoresistance in a cuprate superconductor. Science. AAAS. https://doi.org/10.1126/science.aan3178","ieee":"P. Giraldo-Gallo et al., “Scale-invariant magnetoresistance in a cuprate superconductor,” Science, vol. 361, no. 6401. AAAS, pp. 479–481, 2018.","ista":"Giraldo-Gallo P, Galvis JA, Stegen Z, Modic KA, Balakirev FF, Betts JB, Lian X, Moir C, Riggs SC, Wu J, Bollinger AT, He X, Božović I, Ramshaw BJ, McDonald RD, Boebinger GS, Shekhter A. 2018. Scale-invariant magnetoresistance in a cuprate superconductor. Science. 361(6401), 479–481.","ama":"Giraldo-Gallo P, Galvis JA, Stegen Z, et al. Scale-invariant magnetoresistance in a cuprate superconductor. Science. 2018;361(6401):479-481. doi:10.1126/science.aan3178","chicago":"Giraldo-Gallo, P., J. A. Galvis, Z. Stegen, Kimberly A Modic, F. F. Balakirev, J. B. Betts, X. Lian, et al. “Scale-Invariant Magnetoresistance in a Cuprate Superconductor.” Science. AAAS, 2018. https://doi.org/10.1126/science.aan3178.","short":"P. Giraldo-Gallo, J.A. Galvis, Z. Stegen, K.A. Modic, F.F. Balakirev, J.B. Betts, X. Lian, C. Moir, S.C. Riggs, J. Wu, A.T. Bollinger, X. He, I. Božović, B.J. Ramshaw, R.D. McDonald, G.S. Boebinger, A. Shekhter, Science 361 (2018) 479–481.","mla":"Giraldo-Gallo, P., et al. “Scale-Invariant Magnetoresistance in a Cuprate Superconductor.” Science, vol. 361, no. 6401, AAAS, 2018, pp. 479–81, doi:10.1126/science.aan3178."},"publication":"Science","page":"479-481","article_type":"original","quality_controlled":"1","date_published":"2018-08-03T00:00:00Z","doi":"10.1126/science.aan3178","language":[{"iso":"eng"}],"publication_identifier":{"issn":["0036-8075"],"eissn":["1095-9203"]},"article_processing_charge":"No","month":"08","day":"03"},{"type":"journal_article","abstract":[{"text":"The complex antiferromagnetic orders observed in the honeycomb iridates are a double-edged sword in the search for a quantum spin-liquid: both attesting that the magnetic interactions provide many of the necessary ingredients, while simultaneously impeding access. Focus has naturally been drawn to the unusual magnetic orders that hint at the underlying spin correlations. However, the study of any particular broken symmetry state generally provides little clue about the possibility of other nearby ground states. Here we use magnetic fields approaching 100 Tesla to reveal the extent of the spin correlations in γ-lithium iridate. We find that a small component of field along the magnetic easy-axis melts long-range order, revealing a bistable, strongly correlated spin state. Far from the usual destruction of antiferromagnetism via spin polarization, the high-field state possesses only a small fraction of the total iridium moment, without evidence for long-range order up to the highest attainable magnetic fields.","lang":"eng"}],"issue":"1","_id":"7064","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","ddc":["530"],"status":"public","title":"Robust spin correlations at high magnetic fields in the harmonic honeycomb iridates","intvolume":" 8","file":[{"creator":"cziletti","content_type":"application/pdf","file_size":1242958,"file_name":"2017_NatureComm_Modic.pdf","access_level":"open_access","date_updated":"2020-07-14T12:47:48Z","date_created":"2019-11-20T14:12:54Z","checksum":"57fcd59d2f274b6b16cc89ea03cfd440","file_id":"7091","relation":"main_file"}],"oa_version":"Published Version","day":"01","article_processing_charge":"No","has_accepted_license":"1","publication":"Nature Communications","citation":{"apa":"Modic, K. A., Ramshaw, B. J., Betts, J. B., Breznay, N. P., Analytis, J. G., McDonald, R. D., & Shekhter, A. (2017). Robust spin correlations at high magnetic fields in the harmonic honeycomb iridates. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-017-00264-6","ieee":"K. A. Modic et al., “Robust spin correlations at high magnetic fields in the harmonic honeycomb iridates,” Nature Communications, vol. 8, no. 1. Springer Nature, 2017.","ista":"Modic KA, Ramshaw BJ, Betts JB, Breznay NP, Analytis JG, McDonald RD, Shekhter A. 2017. Robust spin correlations at high magnetic fields in the harmonic honeycomb iridates. Nature Communications. 8(1), 180.","ama":"Modic KA, Ramshaw BJ, Betts JB, et al. Robust spin correlations at high magnetic fields in the harmonic honeycomb iridates. Nature Communications. 2017;8(1). doi:10.1038/s41467-017-00264-6","chicago":"Modic, Kimberly A, B. J. Ramshaw, J. B. Betts, Nicholas P. Breznay, James G. Analytis, Ross D. McDonald, and Arkady Shekhter. “Robust Spin Correlations at High Magnetic Fields in the Harmonic Honeycomb Iridates.” Nature Communications. Springer Nature, 2017. https://doi.org/10.1038/s41467-017-00264-6.","short":"K.A. Modic, B.J. Ramshaw, J.B. Betts, N.P. Breznay, J.G. Analytis, R.D. McDonald, A. Shekhter, Nature Communications 8 (2017).","mla":"Modic, Kimberly A., et al. “Robust Spin Correlations at High Magnetic Fields in the Harmonic Honeycomb Iridates.” Nature Communications, vol. 8, no. 1, 180, Springer Nature, 2017, doi:10.1038/s41467-017-00264-6."},"article_type":"original","date_published":"2017-08-01T00:00:00Z","article_number":"180","file_date_updated":"2020-07-14T12:47:48Z","extern":"1","year":"2017","publication_status":"published","publisher":"Springer Nature","author":[{"id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic","full_name":"Modic, Kimberly A"},{"full_name":"Ramshaw, B. J.","last_name":"Ramshaw","first_name":"B. J."},{"last_name":"Betts","first_name":"J. B.","full_name":"Betts, J. B."},{"full_name":"Breznay, Nicholas P.","last_name":"Breznay","first_name":"Nicholas P."},{"full_name":"Analytis, James G.","first_name":"James G.","last_name":"Analytis"},{"first_name":"Ross D.","last_name":"McDonald","full_name":"McDonald, Ross D."},{"last_name":"Shekhter","first_name":"Arkady","full_name":"Shekhter, Arkady"}],"date_updated":"2021-01-12T08:11:39Z","date_created":"2019-11-19T13:11:55Z","volume":8,"month":"08","publication_identifier":{"issn":["2041-1723"]},"oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"quality_controlled":"1","doi":"10.1038/s41467-017-00264-6","language":[{"iso":"eng"}]},{"file":[{"date_created":"2019-11-26T12:57:11Z","date_updated":"2020-07-14T12:47:48Z","checksum":"433a26a7e14206e139f3fec2c8ee8623","relation":"main_file","file_id":"7115","file_size":1383236,"content_type":"application/pdf","creator":"dernst","file_name":"2017_NPJ_Ramshaw.pdf","access_level":"open_access"}],"oa_version":"Published Version","ddc":["530"],"status":"public","title":"Broken rotational symmetry on the Fermi surface of a high-Tc superconductor","intvolume":" 2","_id":"7067","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","abstract":[{"text":"Broken fourfold rotational (C4) symmetry is observed in the experimental properties of several classes of unconventional superconductors. It has been proposed that this symmetry breaking is important for superconducting pairing in these materials, but in the high-Tc cuprates this broken symmetry has never been observed on the Fermi surface. Here we report a pronounced anisotropy in the angle dependence of the interlayer magnetoresistance of the underdoped high transition temperature (high-Tc) superconductor YBa2Cu3O6.58, directly revealing broken C4 symmetry on the Fermi surface. Moreover, we demonstrate that this Fermi surface has C2 symmetry of the type produced by a uniaxial or anisotropic density-wave phase. This establishes the central role of C4 symmetry breaking in the Fermi surface reconstruction of YBa2Cu3O6+δ , and suggests a striking degree of universality among unconventional superconductors.","lang":"eng"}],"issue":"1","type":"journal_article","date_published":"2017-02-13T00:00:00Z","article_type":"original","publication":"npj Quantum Materials","citation":{"ama":"Ramshaw BJ, Harrison N, Sebastian SE, et al. Broken rotational symmetry on the Fermi surface of a high-Tc superconductor. npj Quantum Materials. 2017;2(1). doi:10.1038/s41535-017-0013-z","ista":"Ramshaw BJ, Harrison N, Sebastian SE, Ghannadzadeh S, Modic KA, Bonn DA, Hardy WN, Liang R, Goddard PA. 2017. Broken rotational symmetry on the Fermi surface of a high-Tc superconductor. npj Quantum Materials. 2(1), 8.","ieee":"B. J. Ramshaw et al., “Broken rotational symmetry on the Fermi surface of a high-Tc superconductor,” npj Quantum Materials, vol. 2, no. 1. Springer Nature, 2017.","apa":"Ramshaw, B. J., Harrison, N., Sebastian, S. E., Ghannadzadeh, S., Modic, K. A., Bonn, D. A., … Goddard, P. A. (2017). Broken rotational symmetry on the Fermi surface of a high-Tc superconductor. Npj Quantum Materials. Springer Nature. https://doi.org/10.1038/s41535-017-0013-z","mla":"Ramshaw, B. J., et al. “Broken Rotational Symmetry on the Fermi Surface of a High-Tc Superconductor.” Npj Quantum Materials, vol. 2, no. 1, 8, Springer Nature, 2017, doi:10.1038/s41535-017-0013-z.","short":"B.J. Ramshaw, N. Harrison, S.E. Sebastian, S. Ghannadzadeh, K.A. Modic, D.A. Bonn, W.N. Hardy, R. Liang, P.A. Goddard, Npj Quantum Materials 2 (2017).","chicago":"Ramshaw, B. J., N. Harrison, S. E. Sebastian, S. Ghannadzadeh, Kimberly A Modic, D. A. Bonn, W. N. Hardy, Ruixing Liang, and P. A. Goddard. “Broken Rotational Symmetry on the Fermi Surface of a High-Tc Superconductor.” Npj Quantum Materials. Springer Nature, 2017. https://doi.org/10.1038/s41535-017-0013-z."},"day":"13","has_accepted_license":"1","article_processing_charge":"No","date_created":"2019-11-19T13:18:30Z","date_updated":"2021-01-12T08:11:40Z","volume":2,"author":[{"first_name":"B. J.","last_name":"Ramshaw","full_name":"Ramshaw, B. J."},{"full_name":"Harrison, N.","last_name":"Harrison","first_name":"N."},{"full_name":"Sebastian, S. E.","first_name":"S. E.","last_name":"Sebastian"},{"full_name":"Ghannadzadeh, S.","last_name":"Ghannadzadeh","first_name":"S."},{"id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic","full_name":"Modic, Kimberly A"},{"first_name":"D. A.","last_name":"Bonn","full_name":"Bonn, D. A."},{"full_name":"Hardy, W. N.","first_name":"W. N.","last_name":"Hardy"},{"first_name":"Ruixing","last_name":"Liang","full_name":"Liang, Ruixing"},{"full_name":"Goddard, P. A.","first_name":"P. A.","last_name":"Goddard"}],"publication_status":"published","publisher":"Springer Nature","year":"2017","extern":"1","file_date_updated":"2020-07-14T12:47:48Z","article_number":"8","language":[{"iso":"eng"}],"doi":"10.1038/s41535-017-0013-z","quality_controlled":"1","oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"month":"02","publication_identifier":{"issn":["2397-4648"]}},{"publisher":"Springer Nature","publication_status":"published","year":"2017","volume":7,"date_created":"2019-11-19T13:17:46Z","date_updated":"2021-01-12T08:11:40Z","author":[{"first_name":"Z.","last_name":"Zhu","full_name":"Zhu, Z."},{"last_name":"McDonald","first_name":"R. D.","full_name":"McDonald, R. D."},{"first_name":"A.","last_name":"Shekhter","full_name":"Shekhter, A."},{"full_name":"Ramshaw, B. J.","first_name":"B. J.","last_name":"Ramshaw"},{"first_name":"Kimberly A","last_name":"Modic","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","full_name":"Modic, Kimberly A"},{"full_name":"Balakirev, F. F.","last_name":"Balakirev","first_name":"F. F."},{"first_name":"N.","last_name":"Harrison","full_name":"Harrison, N."}],"article_number":"1733","extern":"1","file_date_updated":"2020-07-14T12:47:48Z","quality_controlled":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1038/s41598-017-01693-5","publication_identifier":{"issn":["2045-2322"]},"month":"05","intvolume":" 7","status":"public","title":"Magnetic field tuning of an excitonic insulator between the weak and strong coupling regimes in quantum limit graphite","ddc":["530"],"_id":"7066","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file":[{"date_created":"2019-11-26T11:58:58Z","date_updated":"2020-07-14T12:47:48Z","checksum":"801f80b04ecd1ead95c8ab9827cbe067","file_id":"7111","relation":"main_file","creator":"dernst","file_size":1571567,"content_type":"application/pdf","file_name":"2017_ScientificReports_Zhu.pdf","access_level":"open_access"}],"oa_version":"Published Version","type":"journal_article","abstract":[{"lang":"eng","text":"The excitonic insulator phase has long been predicted to form in proximity to a band gap opening in the underlying band structure. The character of the pairing is conjectured to crossover from weak (BCS-like) to strong coupling (BEC-like) as the underlying band structure is tuned from the metallic to the insulating side of the gap opening. Here we report the high-magnetic field phase diagram of graphite to exhibit just such a crossover. By way of comprehensive angle-resolved magnetoresistance measurements, we demonstrate that the underlying band gap opening occurs inside the magnetic field-induced phase, paving the way for a systematic study of the BCS-BEC-like crossover by means of conventional condensed matter probes."}],"article_type":"original","citation":{"mla":"Zhu, Z., et al. “Magnetic Field Tuning of an Excitonic Insulator between the Weak and Strong Coupling Regimes in Quantum Limit Graphite.” Scientific Reports, vol. 7, 1733, Springer Nature, 2017, doi:10.1038/s41598-017-01693-5.","short":"Z. Zhu, R.D. McDonald, A. Shekhter, B.J. Ramshaw, K.A. Modic, F.F. Balakirev, N. Harrison, Scientific Reports 7 (2017).","chicago":"Zhu, Z., R. D. McDonald, A. Shekhter, B. J. Ramshaw, Kimberly A Modic, F. F. Balakirev, and N. Harrison. “Magnetic Field Tuning of an Excitonic Insulator between the Weak and Strong Coupling Regimes in Quantum Limit Graphite.” Scientific Reports. Springer Nature, 2017. https://doi.org/10.1038/s41598-017-01693-5.","ama":"Zhu Z, McDonald RD, Shekhter A, et al. Magnetic field tuning of an excitonic insulator between the weak and strong coupling regimes in quantum limit graphite. Scientific Reports. 2017;7. doi:10.1038/s41598-017-01693-5","ista":"Zhu Z, McDonald RD, Shekhter A, Ramshaw BJ, Modic KA, Balakirev FF, Harrison N. 2017. Magnetic field tuning of an excitonic insulator between the weak and strong coupling regimes in quantum limit graphite. Scientific Reports. 7, 1733.","apa":"Zhu, Z., McDonald, R. D., Shekhter, A., Ramshaw, B. J., Modic, K. A., Balakirev, F. F., & Harrison, N. (2017). Magnetic field tuning of an excitonic insulator between the weak and strong coupling regimes in quantum limit graphite. Scientific Reports. Springer Nature. https://doi.org/10.1038/s41598-017-01693-5","ieee":"Z. Zhu et al., “Magnetic field tuning of an excitonic insulator between the weak and strong coupling regimes in quantum limit graphite,” Scientific Reports, vol. 7. Springer Nature, 2017."},"publication":"Scientific Reports","date_published":"2017-05-04T00:00:00Z","article_processing_charge":"No","has_accepted_license":"1","day":"04"},{"quality_controlled":"1","article_type":"original","citation":{"ama":"Shekhter A, Modic KA, McDonald RD, Ramshaw BJ. Thermodynamic constraints on the amplitude of quantum oscillations. Physical Review B. 2017;95(12). doi:10.1103/physrevb.95.121106","ieee":"A. Shekhter, K. A. Modic, R. D. McDonald, and B. J. Ramshaw, “Thermodynamic constraints on the amplitude of quantum oscillations,” Physical Review B, vol. 95, no. 12. APS, 2017.","apa":"Shekhter, A., Modic, K. A., McDonald, R. D., & Ramshaw, B. J. (2017). Thermodynamic constraints on the amplitude of quantum oscillations. Physical Review B. APS. https://doi.org/10.1103/physrevb.95.121106","ista":"Shekhter A, Modic KA, McDonald RD, Ramshaw BJ. 2017. Thermodynamic constraints on the amplitude of quantum oscillations. Physical Review B. 95(12), 121106.","short":"A. Shekhter, K.A. Modic, R.D. McDonald, B.J. Ramshaw, Physical Review B 95 (2017).","mla":"Shekhter, Arkady, et al. “Thermodynamic Constraints on the Amplitude of Quantum Oscillations.” Physical Review B, vol. 95, no. 12, 121106, APS, 2017, doi:10.1103/physrevb.95.121106.","chicago":"Shekhter, Arkady, Kimberly A Modic, R. D. McDonald, and B. J. Ramshaw. “Thermodynamic Constraints on the Amplitude of Quantum Oscillations.” Physical Review B. APS, 2017. https://doi.org/10.1103/physrevb.95.121106."},"publication":"Physical Review B","language":[{"iso":"eng"}],"date_published":"2017-03-27T00:00:00Z","doi":"10.1103/physrevb.95.121106","article_processing_charge":"No","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"month":"03","day":"27","publisher":"APS","intvolume":" 95","title":"Thermodynamic constraints on the amplitude of quantum oscillations","status":"public","publication_status":"published","_id":"7065","year":"2017","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","volume":95,"oa_version":"None","date_created":"2019-11-19T13:12:27Z","date_updated":"2021-01-12T08:11:39Z","author":[{"last_name":"Shekhter","first_name":"Arkady","full_name":"Shekhter, Arkady"},{"last_name":"Modic","first_name":"Kimberly A","orcid":"0000-0001-9760-3147","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","full_name":"Modic, Kimberly A"},{"last_name":"McDonald","first_name":"R. D.","full_name":"McDonald, R. D."},{"first_name":"B. J.","last_name":"Ramshaw","full_name":"Ramshaw, B. J."}],"type":"journal_article","article_number":"121106","extern":"1","issue":"12","abstract":[{"text":"Magneto-quantum oscillation experiments in high-temperature superconductors show a strong thermally induced suppression of the oscillation amplitude approaching the critical dopings [B. J. Ramshaw et al., Science 348, 317 (2014); H. Shishido et al., Phys. Rev. Lett. 104, 057008 (2010); P. Walmsley et al., Phys. Rev. Lett. 110, 257002 (2013)]—in support of a quantum-critical origin of their phase diagrams. We suggest that, in addition to a thermodynamic mass enhancement, these experiments may directly indicate the increasing role of quantum fluctuations that suppress the quantum oscillation amplitude through inelastic scattering. We show that the traditional theoretical approaches beyond Lifshitz-Kosevich to calculate the oscillation amplitude in correlated metals result in a contradiction with the third law of thermodynamics and suggest a way to rectify this problem.","lang":"eng"}]},{"article_type":"original","citation":{"mla":"Moll, Philip J. W., et al. “Magnetic Torque Anomaly in the Quantum Limit of Weyl Semimetals.” Nature Communications, vol. 7, 12492, Springer Nature, 2016, doi:10.1038/ncomms12492.","short":"P.J.W. Moll, A.C. Potter, N.L. Nair, B.J. Ramshaw, K.A. Modic, S. Riggs, B. Zeng, N.J. Ghimire, E.D. Bauer, R. Kealhofer, F. Ronning, J.G. Analytis, Nature Communications 7 (2016).","chicago":"Moll, Philip J. W., Andrew C. Potter, Nityan L. Nair, B. J. Ramshaw, Kimberly A Modic, Scott Riggs, Bin Zeng, et al. “Magnetic Torque Anomaly in the Quantum Limit of Weyl Semimetals.” Nature Communications. Springer Nature, 2016. https://doi.org/10.1038/ncomms12492.","ama":"Moll PJW, Potter AC, Nair NL, et al. Magnetic torque anomaly in the quantum limit of Weyl semimetals. Nature Communications. 2016;7. doi:10.1038/ncomms12492","ista":"Moll PJW, Potter AC, Nair NL, Ramshaw BJ, Modic KA, Riggs S, Zeng B, Ghimire NJ, Bauer ED, Kealhofer R, Ronning F, Analytis JG. 2016. Magnetic torque anomaly in the quantum limit of Weyl semimetals. Nature Communications. 7, 12492.","apa":"Moll, P. J. W., Potter, A. C., Nair, N. L., Ramshaw, B. J., Modic, K. A., Riggs, S., … Analytis, J. G. (2016). Magnetic torque anomaly in the quantum limit of Weyl semimetals. Nature Communications. Springer Nature. https://doi.org/10.1038/ncomms12492","ieee":"P. J. W. Moll et al., “Magnetic torque anomaly in the quantum limit of Weyl semimetals,” Nature Communications, vol. 7. Springer Nature, 2016."},"publication":"Nature Communications","date_published":"2016-08-22T00:00:00Z","article_processing_charge":"No","has_accepted_license":"1","day":"22","intvolume":" 7","title":"Magnetic torque anomaly in the quantum limit of Weyl semimetals","ddc":["530"],"status":"public","_id":"7068","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file":[{"file_size":663911,"content_type":"application/pdf","creator":"dernst","access_level":"open_access","file_name":"2016_NatureComm_Moll.pdf","checksum":"e3272ed18d22187406b30be48a56e7b2","date_created":"2019-11-26T12:52:19Z","date_updated":"2020-07-14T12:47:48Z","relation":"main_file","file_id":"7114"}],"oa_version":"Published Version","type":"journal_article","abstract":[{"lang":"eng","text":"Electrons in materials with linear dispersion behave as massless Weyl- or Dirac-quasiparticles, and continue to intrigue due to their close resemblance to elusive ultra-relativistic particles as well as their potential for future electronics. Yet the experimental signatures of Weyl-fermions are often subtle and indirect, in particular if they coexist with conventional, massive quasiparticles. Here we show a pronounced anomaly in the magnetic torque of the Weyl semimetal NbAs upon entering the quantum limit state in high magnetic fields. The torque changes sign in the quantum limit, signalling a reversal of the magnetic anisotropy that can be directly attributed to the topological nature of the Weyl electrons. Our results establish that anomalous quantum limit torque measurements provide a direct experimental method to identify and distinguish Weyl and Dirac systems."}],"quality_controlled":"1","oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"language":[{"iso":"eng"}],"doi":"10.1038/ncomms12492","publication_identifier":{"issn":["2041-1723"]},"month":"08","publisher":"Springer Nature","publication_status":"published","year":"2016","volume":7,"date_created":"2019-11-19T13:20:53Z","date_updated":"2021-01-12T08:11:40Z","author":[{"full_name":"Moll, Philip J. W.","last_name":"Moll","first_name":"Philip J. W."},{"first_name":"Andrew C.","last_name":"Potter","full_name":"Potter, Andrew C."},{"first_name":"Nityan L.","last_name":"Nair","full_name":"Nair, Nityan L."},{"first_name":"B. J.","last_name":"Ramshaw","full_name":"Ramshaw, B. J."},{"id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic","full_name":"Modic, Kimberly A"},{"first_name":"Scott","last_name":"Riggs","full_name":"Riggs, Scott"},{"last_name":"Zeng","first_name":"Bin","full_name":"Zeng, Bin"},{"first_name":"Nirmal J.","last_name":"Ghimire","full_name":"Ghimire, Nirmal J."},{"last_name":"Bauer","first_name":"Eric D.","full_name":"Bauer, Eric D."},{"full_name":"Kealhofer, Robert","last_name":"Kealhofer","first_name":"Robert"},{"last_name":"Ronning","first_name":"Filip","full_name":"Ronning, Filip"},{"full_name":"Analytis, James G.","last_name":"Analytis","first_name":"James G."}],"article_number":"12492","extern":"1","file_date_updated":"2020-07-14T12:47:48Z"}]