Surviving conduction symmetries in non-linear response
Superlattices and Microstructures(2003)
摘要
In linear response, the electric conductance of mesoscopic, two-terminal devices is symmetric with respect to the direction of an external magnetic field. The conductance symmetry, in general, breaks down in the non-linear regime of transport. Here we consider semiconductor quantum dots and show certain symmetries survive in the non-linear conductance with respect to the bias voltage and magnetic field that can be measured.
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关键词
electric conductivity,magnetic field
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