Magneto-Thermoelectric Transport in Graphene Quantum Dot with Strong Correlations
Disorder at etched edges of graphene quantum dots (GQD) enables random all-to-all interactions between localized charges in partially filled Landau levels, providing a potential platform to realize the Sachdev-Ye-Kitaev (SYK) model. We use quantum Hall edge states in the graphene electrodes to measure electrical conductance and thermoelectric power across the GQD. In specific temperature ranges, we observe a suppression of electric conductance fluctuations and slowly decreasing thermoelectric power across the GQD with increasing temperature, consistent with recent theory for the SYK regime.
WOS:001246341300003
2024-06-12
132
24
246502
REVIEWED
Funder | Grant Number |
DOE | DE-SC0012260 |
ONR MURI | N00014-21-1-2537 |
JSPS KAKENHI | 20H00354 |
World Premier International Research Center Initiative (WPI) , MEXT, Japan | |
U.S. National Science Foundation | DMR-2245246 |
Branco Weiss Society in Science, ETH Zurich | |
Swiss National Science Foundation | CRSK-2_221180 |
NSF | ECS-0335765 |