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Magnetic-field symmetries of mesoscopic nonlinear conductance

M. L. Polianski·M. Buttiker
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Abstract

We examine contributions to the dc-current of mesoscopic samples which are non-linear in applied voltage. In the presence of a magnetic field, the current can be decomposed into components which are odd (antisymmetric) and even (symmetric) under flux reversal. For a two-terminal chaotic cavity, these components turn out to be very sensitive to the strength of the Coulomb interaction and the asymmetry of the contact conductances. For both two- and multi-terminal quantum dots we discuss correlations of current non-linearity in voltage measured at different magnetic fields and temperatures.

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M. L. Polianski, M. Buttiker. 2007-01-01. Magnetic-field symmetries of mesoscopic nonlinear conductance. https://doi.org/10.1016/j.physe.2007.05.007

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