Origin of the saw-tooth torque in spin-orbital-coupled magnets: Application to α-RuCl<sub>3</sub>
ORAL
Abstract
Honeycomb Kitaev candidate materials based on 4d5 and 5d5 metals have been recently shown to commonly display a distinct saw-tooth angular dependence of the magnetic torque over a wide range of magnetic fields. By a combination of density functional theory calculations, exact diagonalization and semiclassical considerations, we show here that bilinear anisotropic interactions and/or g-anisotropy are each sufficient to explain the observed torque response, which may be distinguished on the basis of high-field measurements.
We argue that these finding unify the understanding of magnetic torque experiments in a variety of Kitaev candidate materials.
We argue that these finding unify the understanding of magnetic torque experiments in a variety of Kitaev candidate materials.
*We acknowledge support by the DFG (Deutsche Forschungsgemeinschaft).
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Presenters
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Roser Valenti
- Institute of Theoretical Physics, Goethe University Frankfurt, Frankfurt am Main, Germany.
- Institut für Theoretische Physik Goethe Universität Frankfurt am Mai
- Goethe University Frankfurt
- Physics, Goethe University Frankfurt
- Institute for Theoretical Physics, Goethe University Frankfurt