Thermopower Probe of Fractional Quantum Hall States in Monolayer Graphene
- 27 January 2026
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 136 (4) , 046502
Abstract
Thermopower, through its entropic sensitivity, has recently emerged as a powerful probe of correlated states. Here, we report the first thermopower measurements of fractional quantum Hall (FQH) states in monolayer graphene, a system that can host new correlated states due to its relativistic dispersion relation. Our thermopower measurements reveal FQH states appearing in the N=0 and higher Landau levels, including new even denominator states. We employ temperature-dependent magneto-thermopower measurements to extract the energy gaps associated with the more prominent FQH states.Keywords
Funding Information
- National Science Foundation (2337497)
- National Science Foundation (DMR-2204635)
- U.S. Department of Energy (DE-SC0024109)
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