Determining Microscopic Origins of the Thermal Hall Effect in Tb2Ti2O7
Studies of thermal Hall effects in insulating materials ascribe its microscopic origins to charge-neutral bosonic carriers generated by non-zero Berry curvature in the wavefunctions of their excitations. In the pyrochlore Tb2Ti2O7, a large thermal Hall effect was found in its cooperative paramagnetic phase that is suppressed by field-induced order. If the thermal Hall effect originates from the Berry curvature generated by exchange coupled crystal field excitons, it should be visible in the applied field-evolution of the full dispersion. We propose to use LET to investigate the low energy portion of Tb2Ti2O7's exciton band structure in both the cooperative paramagnet and ordered phases up to 9 T.
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- 4 8meV
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| Provenance | |
|---|---|
| Creator | Ms Alexandra Turrini; Dr Rob Bewley; Dr Tom Fennell |
| Publisher | ISIS Neutron and Muon Source |
| Publication Year | 2022 |
| Rights | CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/ |
| OpenAccess | true |
| Contact | isisdata(at)stfc.ac.uk |
| Representation | |
|---|---|
| Resource Type | Dataset |
| Discipline | Natural Sciences; Physics |
| Temporal Coverage Begin | 2019-06-14T09:00:00Z |
| Temporal Coverage End | 2019-06-19T09:00:00Z |