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Deviations from the Gaussian distribution of mesoscopic conductance fluctuations

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http://link.aps.org/doi/10.1103/PhysRevB.55.4710
Original languageEnglish
Pages (from-to)4710-4716
Number of pages7
JournalPhysical Review B
Volume55
DOIs
Publication statusPublished - 1 Feb 1997

Abstract

The conductance distribution of metallic mesoscopic systems is considered. The variance of this distribution describes the universal conductance fluctuations, yielding a Gaussian distribution of the conductance. We calculate diagrammatically the third cumulant of this distribution, the leading deviation from the Gaussian. We confirm random matrix theory calculations that the leading contribution in quasi-one-dimension vanishes. However, in quasi-two-dimensions the third cumulant is negative, whereas in three dimensions it is positive.

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