Thermal Hall Effect of Topological Triplons in SrCu2(BO3)2
Abstract
The quantum magnet SrCu2(BO3)2 is a physical realisation of the Shastry-Sutherland model — a two-dimensional square lattice, solved to have a ground state of singlets on diagonal bonds. Recent theoretical work suggests that the material should play host to a topological phase of triplons, which may manifest a thermal Hall effect. However, within the measured experimental resolution, we report that there is no thermal Hall signal of the predicted magnitude. This is possibly due to triplon-triplon interactions playing a more significant role than anticipated in the temperature range under investigation.
- Publication:
-
International Conference on Strongly Correlated Electron Systems (SCES2019)
- Pub Date:
- 2020
- DOI:
- 10.7566/JPSCP.30.011089
- Bibcode:
- 2020sces.confa1089P