The Thermopower of Quantum Chaos
S. F. Godijn, S. Moeller, H. Buhmann, L. W. Molenkamp, and S. A. van, Langen
TL;DR
This paper measures the thermopower fluctuations in chaotic quantum dots, revealing non-Gaussian behavior consistent with Random Matrix Theory and showing no influence from weak localization or short trajectories.
Contribution
It provides experimental evidence of thermopower fluctuations in quantum chaos and compares results with theoretical predictions, highlighting the absence of certain quantum effects.
Findings
Thermopower fluctuations are non-Gaussian.
Results agree with Random Matrix Theory simulations.
No contributions from weak localization or short trajectories.
Abstract
The thermovoltage of a chaotic quantum dot is measured using a current heating technique. The fluctuations in the thermopower as a function of magnetic field and dot shape display a non-Gaussian distribution, in agreement with simulations using Random Matrix Theory. We observe no contributions from weak localization or short trajectories in the thermopower.
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