[{"month":"06","publication_identifier":{"issn":["1530-6984"],"eissn":["1530-6992"]},"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1905.06303"}],"external_id":{"pmid":["31246034"],"arxiv":["1905.06303"]},"oa":1,"quality_controlled":"1","doi":"10.1021/acs.nanolett.9b01983","language":[{"iso":"eng"}],"extern":"1","year":"2019","acknowledgement":"We are grateful to Nadya Mason, Taylor Hughes, and Alexey Bezryadin for useful discussions. This work was supported by the DOE Basic Energy Sciences under DE-SC0012649 and the Department of Physics and the Frederick Seitz Materials Research Laboratory Central Facilities at the University of Illinois.","pmid":1,"publication_status":"published","publisher":"American Chemical Society","author":[{"full_name":"Polshyn, Hryhoriy","last_name":"Polshyn","first_name":"Hryhoriy","orcid":"0000-0001-8223-8896","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48"},{"last_name":"Naibert","first_name":"Tyler","full_name":"Naibert, Tyler"},{"full_name":"Budakian, Raffi","last_name":"Budakian","first_name":"Raffi"}],"date_created":"2022-01-13T15:11:14Z","date_updated":"2022-01-13T15:41:24Z","volume":19,"scopus_import":"1","keyword":["mechanical engineering","condensed matter physics","general materials science","general chemistry","bioengineering"],"day":"27","article_processing_charge":"No","publication":"Nano Letters","citation":{"apa":"Polshyn, H., Naibert, T., & Budakian, R. (2019). Manipulating multivortex states in superconducting structures. Nano Letters. American Chemical Society. https://doi.org/10.1021/acs.nanolett.9b01983","ieee":"H. Polshyn, T. Naibert, and R. Budakian, “Manipulating multivortex states in superconducting structures,” Nano Letters, vol. 19, no. 8. American Chemical Society, pp. 5476–5482, 2019.","ista":"Polshyn H, Naibert T, Budakian R. 2019. Manipulating multivortex states in superconducting structures. Nano Letters. 19(8), 5476–5482.","ama":"Polshyn H, Naibert T, Budakian R. Manipulating multivortex states in superconducting structures. Nano Letters. 2019;19(8):5476-5482. doi:10.1021/acs.nanolett.9b01983","chicago":"Polshyn, Hryhoriy, Tyler Naibert, and Raffi Budakian. “Manipulating Multivortex States in Superconducting Structures.” Nano Letters. American Chemical Society, 2019. https://doi.org/10.1021/acs.nanolett.9b01983.","short":"H. Polshyn, T. Naibert, R. Budakian, Nano Letters 19 (2019) 5476–5482.","mla":"Polshyn, Hryhoriy, et al. “Manipulating Multivortex States in Superconducting Structures.” Nano Letters, vol. 19, no. 8, American Chemical Society, 2019, pp. 5476–82, doi:10.1021/acs.nanolett.9b01983."},"article_type":"original","page":"5476-5482","date_published":"2019-06-27T00:00:00Z","type":"journal_article","abstract":[{"text":"We demonstrate a method for manipulating small ensembles of vortices in multiply connected superconducting structures. A micron-size magnetic particle attached to the tip of a silicon cantilever is used to locally apply magnetic flux through the superconducting structure. By scanning the tip over the surface of the device and by utilizing the dynamical coupling between the vortices and the cantilever, a high-resolution spatial map of the different vortex configurations is obtained. Moving the tip to a particular location in the map stabilizes a distinct multivortex configuration. Thus, the scanning of the tip over a particular trajectory in space permits nontrivial operations to be performed, such as braiding of individual vortices within a larger vortex ensemble—a key capability required by many proposals for topological quantum computing.","lang":"eng"}],"issue":"8","_id":"10622","user_id":"ea97e931-d5af-11eb-85d4-e6957dddbf17","title":"Manipulating multivortex states in superconducting structures","status":"public","intvolume":" 19","oa_version":"Preprint"},{"main_file_link":[{"url":"https://arxiv.org/abs/1808.07865","open_access":"1"}],"oa":1,"external_id":{"arxiv":["1808.07865"],"pmid":["30679385 "]},"quality_controlled":"1","doi":"10.1126/science.aav1910","language":[{"iso":"eng"}],"publication_identifier":{"issn":["0036-8075"],"eissn":["1095-9203"]},"month":"01","pmid":1,"year":"2019","acknowledgement":"We thank J. Zhu and H. Zhou for experimental assistance and D. Shahar, A. Millis, O. Vafek, M. Zaletel, L. Balents, C. Xu, A. Bernevig, L. Fu, M. Koshino, and P. Moon for helpful discussions.","publisher":"American Association for the Advancement of Science (AAAS)","publication_status":"published","author":[{"full_name":"Yankowitz, Matthew","first_name":"Matthew","last_name":"Yankowitz"},{"full_name":"Chen, Shaowen","first_name":"Shaowen","last_name":"Chen"},{"id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","orcid":"0000-0001-8223-8896","first_name":"Hryhoriy","last_name":"Polshyn","full_name":"Polshyn, Hryhoriy"},{"last_name":"Zhang","first_name":"Yuxuan","full_name":"Zhang, Yuxuan"},{"full_name":"Watanabe, K.","last_name":"Watanabe","first_name":"K."},{"full_name":"Taniguchi, T.","last_name":"Taniguchi","first_name":"T."},{"full_name":"Graf, David","first_name":"David","last_name":"Graf"},{"full_name":"Young, Andrea F.","last_name":"Young","first_name":"Andrea F."},{"full_name":"Dean, Cory R.","first_name":"Cory R.","last_name":"Dean"}],"volume":363,"date_updated":"2022-01-14T13:48:32Z","date_created":"2022-01-14T12:14:58Z","extern":"1","citation":{"short":"M. Yankowitz, S. Chen, H. Polshyn, Y. Zhang, K. Watanabe, T. Taniguchi, D. Graf, A.F. Young, C.R. Dean, Science 363 (2019) 1059–1064.","mla":"Yankowitz, Matthew, et al. “Tuning Superconductivity in Twisted Bilayer Graphene.” Science, vol. 363, no. 6431, American Association for the Advancement of Science (AAAS), 2019, pp. 1059–64, doi:10.1126/science.aav1910.","chicago":"Yankowitz, Matthew, Shaowen Chen, Hryhoriy Polshyn, Yuxuan Zhang, K. Watanabe, T. Taniguchi, David Graf, Andrea F. Young, and Cory R. Dean. “Tuning Superconductivity in Twisted Bilayer Graphene.” Science. American Association for the Advancement of Science (AAAS), 2019. https://doi.org/10.1126/science.aav1910.","ama":"Yankowitz M, Chen S, Polshyn H, et al. Tuning superconductivity in twisted bilayer graphene. Science. 2019;363(6431):1059-1064. doi:10.1126/science.aav1910","apa":"Yankowitz, M., Chen, S., Polshyn, H., Zhang, Y., Watanabe, K., Taniguchi, T., … Dean, C. R. (2019). Tuning superconductivity in twisted bilayer graphene. Science. American Association for the Advancement of Science (AAAS). https://doi.org/10.1126/science.aav1910","ieee":"M. Yankowitz et al., “Tuning superconductivity in twisted bilayer graphene,” Science, vol. 363, no. 6431. American Association for the Advancement of Science (AAAS), pp. 1059–1064, 2019.","ista":"Yankowitz M, Chen S, Polshyn H, Zhang Y, Watanabe K, Taniguchi T, Graf D, Young AF, Dean CR. 2019. Tuning superconductivity in twisted bilayer graphene. Science. 363(6431), 1059–1064."},"publication":"Science","page":"1059-1064","article_type":"original","date_published":"2019-01-24T00:00:00Z","scopus_import":"1","keyword":["multidisciplinary"],"article_processing_charge":"No","day":"24","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","_id":"10625","intvolume":" 363","status":"public","title":"Tuning superconductivity in twisted bilayer graphene","oa_version":"Preprint","type":"journal_article","issue":"6431","abstract":[{"lang":"eng","text":"The discovery of superconductivity and exotic insulating phases in twisted bilayer graphene has established this material as a model system of strongly correlated electrons. To achieve superconductivity, the two layers of graphene need to be at a very precise angle with respect to each other. Yankowitz et al. now show that another experimental knob, hydrostatic pressure, can be used to tune the phase diagram of twisted bilayer graphene (see the Perspective by Feldman). Applying pressure increased the coupling between the layers, which shifted the superconducting transition to higher angles and somewhat higher temperatures."}]},{"publisher":"Springer Nature","publication_status":"published","acknowledgement":"We acknowledge discussions with B. Halperin, C. Huang, A. Macdonald and M. Zalatel. Experimental work at UCSB was supported by the Army Research Office under awards nos. MURI W911NF-16-1-0361 and W911NF-16-1-0482. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by MEXT (Japan) and CREST (JPMJCR15F3), JST. A.F.Y. acknowledges the support of the David and Lucile Packard Foundation and and Alfred. P. Sloan Foundation.","year":"2019","volume":16,"date_created":"2022-01-13T14:45:16Z","date_updated":"2022-01-13T15:34:44Z","author":[{"full_name":"Zhou, H.","first_name":"H.","last_name":"Zhou"},{"full_name":"Polshyn, Hryhoriy","orcid":"0000-0001-8223-8896","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","last_name":"Polshyn","first_name":"Hryhoriy"},{"last_name":"Taniguchi","first_name":"T.","full_name":"Taniguchi, T."},{"full_name":"Watanabe, K.","last_name":"Watanabe","first_name":"K."},{"full_name":"Young, A. F.","first_name":"A. F.","last_name":"Young"}],"extern":"1","quality_controlled":"1","language":[{"iso":"eng"}],"doi":"10.1038/s41567-019-0729-8","publication_identifier":{"issn":["1745-2473"],"eissn":["1745-2481"]},"month":"12","intvolume":" 16","status":"public","title":"Solids of quantum Hall skyrmions in graphene","_id":"10620","user_id":"ea97e931-d5af-11eb-85d4-e6957dddbf17","oa_version":"None","type":"journal_article","issue":"2","abstract":[{"lang":"eng","text":"Partially filled Landau levels host competing electronic orders. For example, electron solids may prevail close to integer filling of the Landau levels before giving way to fractional quantum Hall liquids at higher carrier density1,2. Here, we report the observation of an electron solid with non-collinear spin texture in monolayer graphene, consistent with solidification of skyrmions3—topological spin textures characterized by quantized electrical charge4,5. We probe the spin texture of the solids using a modified Corbino geometry that allows ferromagnetic magnons to be launched and detected6,7. We find that magnon transport is highly efficient when one Landau level is filled (ν=1), consistent with quantum Hall ferromagnetic spin polarization. However, even minimal doping immediately quenches the magnon signal while leaving the vanishing low-temperature charge conductivity unchanged. Our results can be understood by the formation of a solid of charged skyrmions near ν=1, whose non-collinear spin texture leads to rapid magnon decay. Data near fractional fillings show evidence of several fractional skyrmion solids, suggesting that graphene hosts a highly tunable landscape of coupled spin and charge orders."}],"page":"154-158","article_type":"original","citation":{"ama":"Zhou H, Polshyn H, Taniguchi T, Watanabe K, Young AF. Solids of quantum Hall skyrmions in graphene. Nature Physics. 2019;16(2):154-158. doi:10.1038/s41567-019-0729-8","ieee":"H. Zhou, H. Polshyn, T. Taniguchi, K. Watanabe, and A. F. Young, “Solids of quantum Hall skyrmions in graphene,” Nature Physics, vol. 16, no. 2. Springer Nature, pp. 154–158, 2019.","apa":"Zhou, H., Polshyn, H., Taniguchi, T., Watanabe, K., & Young, A. F. (2019). Solids of quantum Hall skyrmions in graphene. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-019-0729-8","ista":"Zhou H, Polshyn H, Taniguchi T, Watanabe K, Young AF. 2019. Solids of quantum Hall skyrmions in graphene. Nature Physics. 16(2), 154–158.","short":"H. Zhou, H. Polshyn, T. Taniguchi, K. Watanabe, A.F. Young, Nature Physics 16 (2019) 154–158.","mla":"Zhou, H., et al. “Solids of Quantum Hall Skyrmions in Graphene.” Nature Physics, vol. 16, no. 2, Springer Nature, 2019, pp. 154–58, doi:10.1038/s41567-019-0729-8.","chicago":"Zhou, H., Hryhoriy Polshyn, T. Taniguchi, K. Watanabe, and A. F. Young. “Solids of Quantum Hall Skyrmions in Graphene.” Nature Physics. Springer Nature, 2019. https://doi.org/10.1038/s41567-019-0729-8."},"publication":"Nature Physics","date_published":"2019-12-16T00:00:00Z","keyword":["General Physics and Astronomy"],"scopus_import":"1","article_processing_charge":"No","day":"16"},{"day":"28","month":"02","article_processing_charge":"No","quality_controlled":"1","article_type":"original","publication":"Journal Club for Condensed Matter Physics","citation":{"mla":"Yankowitz, Mathew, et al. “New Correlated Phenomena in Magic-Angle Twisted Bilayer Graphene/S.” Journal Club for Condensed Matter Physics, vol. 03, Simons Foundation ; University of California, Riverside, 2019, doi:10.36471/jccm_february_2019_03.","short":"M. Yankowitz, S. Chen, H. Polshyn, K. Watanabe, T. Taniguchi, D. Graf, A.F. Young, C.R. Dean, A.L. Sharpe, E.J. Fox, A.W. Barnard, J. Finney, Journal Club for Condensed Matter Physics 03 (2019).","chicago":"Yankowitz, Mathew, Shaowen Chen, Hryhoriy Polshyn, K. Watanabe, T. Taniguchi, David Graf, Andrea F. Young, et al. “New Correlated Phenomena in Magic-Angle Twisted Bilayer Graphene/S.” Journal Club for Condensed Matter Physics. Simons Foundation ; University of California, Riverside, 2019. https://doi.org/10.36471/jccm_february_2019_03.","ama":"Yankowitz M, Chen S, Polshyn H, et al. New correlated phenomena in magic-angle twisted bilayer graphene/s. Journal Club for Condensed Matter Physics. 2019;03. doi:10.36471/jccm_february_2019_03","ista":"Yankowitz M, Chen S, Polshyn H, Watanabe K, Taniguchi T, Graf D, Young AF, Dean CR, Sharpe AL, Fox EJ, Barnard AW, Finney J. 2019. New correlated phenomena in magic-angle twisted bilayer graphene/s. Journal Club for Condensed Matter Physics. 03.","apa":"Yankowitz, M., Chen, S., Polshyn, H., Watanabe, K., Taniguchi, T., Graf, D., … Finney, J. (2019). New correlated phenomena in magic-angle twisted bilayer graphene/s. Journal Club for Condensed Matter Physics. Simons Foundation ; University of California, Riverside. https://doi.org/10.36471/jccm_february_2019_03","ieee":"M. Yankowitz et al., “New correlated phenomena in magic-angle twisted bilayer graphene/s,” Journal Club for Condensed Matter Physics, vol. 03. Simons Foundation ; University of California, Riverside, 2019."},"oa":1,"main_file_link":[{"url":"https://www.condmatjclub.org/?p=3541","open_access":"1"}],"language":[{"iso":"eng"}],"doi":"10.36471/jccm_february_2019_03","date_published":"2019-02-28T00:00:00Z","type":"journal_article","abstract":[{"lang":"eng","text":"Since the discovery of correlated insulators and superconductivity in magic-angle twisted bilayer graphene (tBLG) ([1, 2], JCCM April 2018), theorists have been excitedly pursuing the alluring mix of band topology, symmetry breaking, Mott insulators and superconductivity at play, as well as the potential relation (if any) to high-Tc physics. Now a new stream\r\nof experimental work is arriving which further enriches the story. To briefly recap Episodes 1 and 2 (JCCM April and November 2018), when two graphene layers are stacked with a small rotational mismatch θ, the resulting long-wavelength moire pattern leads to a superlattice potential which reconstructs the low energy band structure. When θ approaches the “magic-angle” θM ∼ 1 ◦, the band structure features eight nearly-flat bands which fill when the electron number per moire unit cell, n/n0, lies between −4 < n/n0 < 4. The bands can be counted as 8 = 2 × 2 × 2: for each spin (2×) and valley (2×) characteristic of monolayergraphene, tBLG has has 2× flat bands which cross at mini-Dirac points."}],"status":"public","publication_status":"published","title":"New correlated phenomena in magic-angle twisted bilayer graphene/s","intvolume":" 3","publisher":"Simons Foundation ; University of California, Riverside","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","_id":"10664","year":"2019","date_created":"2022-01-25T15:09:58Z","date_updated":"2022-01-25T15:56:39Z","volume":"03","oa_version":"Published Version","author":[{"full_name":"Yankowitz, Mathew","last_name":"Yankowitz","first_name":"Mathew"},{"full_name":"Chen, Shaowen","first_name":"Shaowen","last_name":"Chen"},{"full_name":"Polshyn, Hryhoriy","last_name":"Polshyn","first_name":"Hryhoriy","orcid":"0000-0001-8223-8896","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48"},{"first_name":"K.","last_name":"Watanabe","full_name":"Watanabe, K."},{"full_name":"Taniguchi, T.","first_name":"T.","last_name":"Taniguchi"},{"full_name":"Graf, David","last_name":"Graf","first_name":"David"},{"full_name":"Young, Andrea F.","last_name":"Young","first_name":"Andrea F."},{"last_name":"Dean","first_name":"Cory R.","full_name":"Dean, Cory R."},{"last_name":"Sharpe","first_name":"Aaron L.","full_name":"Sharpe, Aaron L."},{"last_name":"Fox","first_name":"E.J.","full_name":"Fox, E.J."},{"first_name":"A.W.","last_name":"Barnard","full_name":"Barnard, A.W."},{"last_name":"Finney","first_name":"Joe","full_name":"Finney, Joe"}]},{"extern":"1","date_updated":"2023-02-21T16:00:09Z","date_created":"2022-01-13T14:21:32Z","volume":367,"author":[{"full_name":"Serlin, M.","first_name":"M.","last_name":"Serlin"},{"full_name":"Tschirhart, C. L.","first_name":"C. L.","last_name":"Tschirhart"},{"full_name":"Polshyn, Hryhoriy","last_name":"Polshyn","first_name":"Hryhoriy","orcid":"0000-0001-8223-8896","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48"},{"full_name":"Zhang, Y.","first_name":"Y.","last_name":"Zhang"},{"full_name":"Zhu, J.","last_name":"Zhu","first_name":"J."},{"last_name":"Watanabe","first_name":"K.","full_name":"Watanabe, K."},{"full_name":"Taniguchi, T.","last_name":"Taniguchi","first_name":"T."},{"full_name":"Balents, L.","last_name":"Balents","first_name":"L."},{"last_name":"Young","first_name":"A. F.","full_name":"Young, A. F."}],"related_material":{"record":[{"relation":"other","status":"public","id":"10697"},{"id":"10698","status":"public","relation":"other"},{"relation":"other","status":"public","id":"10699"}]},"publication_status":"published","publisher":"American Association for the Advancement of Science","year":"2019","acknowledgement":"The authors acknowledge discussions with A. Macdonald, Y. Saito, and M. Zaletel.","pmid":1,"month":"12","publication_identifier":{"issn":["0036-8075"],"eissn":["1095-9203"]},"language":[{"iso":"eng"}],"doi":"10.1126/science.aay5533","quality_controlled":"1","external_id":{"pmid":["31857492"],"arxiv":["1907.00261"]},"main_file_link":[{"url":"https://arxiv.org/abs/1907.00261","open_access":"1"}],"oa":1,"abstract":[{"lang":"eng","text":"The quantum anomalous Hall (QAH) effect combines topology and magnetism to produce precisely quantized Hall resistance at zero magnetic field. We report the observation of a QAH effect in twisted bilayer graphene aligned to hexagonal boron nitride. The effect is driven by intrinsic strong interactions, which polarize the electrons into a single spin- and valley-resolved moiré miniband with Chern number C = 1. In contrast to magnetically doped systems, the measured transport energy gap is larger than the Curie temperature for magnetic ordering, and quantization to within 0.1% of the von Klitzing constant persists to temperatures of several kelvin at zero magnetic field. Electrical currents as small as 1 nanoampere controllably switch the magnetic order between states of opposite polarization, forming an electrically rewritable magnetic memory."}],"issue":"6480","type":"journal_article","oa_version":"Preprint","status":"public","title":"Intrinsic quantized anomalous Hall effect in a moiré heterostructure","intvolume":" 367","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","_id":"10619","day":"19","article_processing_charge":"No","keyword":["multidisciplinary"],"scopus_import":"1","date_published":"2019-12-19T00:00:00Z","article_type":"original","page":"900-903","publication":"Science","citation":{"short":"M. Serlin, C.L. Tschirhart, H. Polshyn, Y. Zhang, J. Zhu, K. Watanabe, T. Taniguchi, L. Balents, A.F. Young, Science 367 (2019) 900–903.","mla":"Serlin, M., et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure.” Science, vol. 367, no. 6480, American Association for the Advancement of Science, 2019, pp. 900–03, doi:10.1126/science.aay5533.","chicago":"Serlin, M., C. L. Tschirhart, Hryhoriy Polshyn, Y. Zhang, J. Zhu, K. Watanabe, T. Taniguchi, L. Balents, and A. F. Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure.” Science. American Association for the Advancement of Science, 2019. https://doi.org/10.1126/science.aay5533.","ama":"Serlin M, Tschirhart CL, Polshyn H, et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure. Science. 2019;367(6480):900-903. doi:10.1126/science.aay5533","apa":"Serlin, M., Tschirhart, C. L., Polshyn, H., Zhang, Y., Zhu, J., Watanabe, K., … Young, A. F. (2019). Intrinsic quantized anomalous Hall effect in a moiré heterostructure. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.aay5533","ieee":"M. Serlin et al., “Intrinsic quantized anomalous Hall effect in a moiré heterostructure,” Science, vol. 367, no. 6480. American Association for the Advancement of Science, pp. 900–903, 2019.","ista":"Serlin M, Tschirhart CL, Polshyn H, Zhang Y, Zhu J, Watanabe K, Taniguchi T, Balents L, Young AF. 2019. Intrinsic quantized anomalous Hall effect in a moiré heterostructure. Science. 367(6480), 900–903."}}]