Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields

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 (2020).


Journal Article | Epub ahead of print | English

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Modic, Kimberly AIST Austria ; McDonald, Ross D.; Ruff, J.P.C.; Bachmann, Maja D.; Lai, You; Palmstrom, Johanna C.; Graf, David; Chan, Mun K.; Balakirev, F.F.; Betts, J.B.; Boebinger, G.S.; Schmidt, Marcus
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Abstract
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.
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2020-10-05
Journal Title
Nature Physics
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IST-REx-ID

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Modic KA, McDonald RD, Ruff JPC, et al. Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields. Nature Physics. 2020. doi:10.1038/s41567-020-1028-0
Modic, K. A., McDonald, R. D., Ruff, J. P. C., Bachmann, M. D., Lai, Y., Palmstrom, J. C., … Shekhter, A. (2020). Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields. Nature Physics. https://doi.org/10.1038/s41567-020-1028-0
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, 2020. https://doi.org/10.1038/s41567-020-1028-0.
K. A. Modic et al., “Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields,” Nature Physics, 2020.
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. 2020. Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields. Nature Physics.
Modic, Kimberly A., et al. “Scale-Invariant Magnetic Anisotropy in RuCl3 at High Magnetic Fields.” Nature Physics, Springer Nature, 2020, doi:10.1038/s41567-020-1028-0.
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