Abstract
We show that electron transport in disordered quantum wires can be described bya modified Cooperon equation, which coincides in form with the Dirac equationfor the massive fermions in a (1 + 1)-dimensional system. In this new formalism, wecalculate the direct electric current induced by electromagnetic (EM) fields inquasi-one-dimensional rings. This current changes sign, from diamagnetic toparamagnetic, depending on the amplitude and frequency of the time-dependentexternal EM field.
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