Asymmetry of Nonlinear Transport and Electron Interactions in Quantum Dots
D. M. Zumbuhl, C. M. Marcus, M. P. Hanson, A. C. Gossard
Abstract
The symmetry properties of transport beyond the linear regime in chaotic quantum dots are investigated experimentally. A component of differential conductance that is antisymmetric in both applied source-drain bias V and magnetic field B, absent in linear transport, is found to exhibit mesoscopic fluctuations around a zero average. Typical values of this component allow a measurement of the electron interaction strength.
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