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Published on: August 2, 2019
Magneto-Thermoelectric Transport in Graphene Quantum Dot with Strong Correlations
Laurel E Anderson1, Antti Laitinen1, Andrew Zimmerman1
1Department of Physics, <a href="https://ror.org/03vek6s52">Harvard University</a>, Cambridge, Massachusetts 02138, USA.
Abstract:
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.
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