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Current fluctuations in composite conductors: Beyond the second cumulant (1103.4754v1)
Published 24 Mar 2011 in cond-mat.mes-hall
Abstract: Employing the non-linear $\sigma$-model we analyze current fluctuations in coherent composite conductors which contain a diffusive element in-between two tunnel barriers. For such systems we explicitly evaluate the frequency-dependent third current cumulant which also determines the leading Coulomb interaction correction to shot noise. Our predictions can be directly tested in future experiments.
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