Effect of Dephasing on Charge-Counting Statistics in Chaotic Cavities

Details Effect of Dephasing on Charge-Counting Statistics in Chaotic Cavities Effect of Dephasing on Charge-Counting Statistics in Chaotic Cavities

1999-10-21

arxiv.org/abs/cond-mat/9910331v1

Physica E 11, 1 (2001)

Physics

Condensed Matter

7 pages, 2 figures, to appear in Physica E (special issue on Dynamics of Complex Systems)

Scientific paper

10.1016/S1386-9477(01)00160-6

We calculate the cumulants of the charge transmitted through a chaotic cavity in the limit that the two openings have a large number of scattering channels. The shot noise, which is the second cumulant, is known to be insensitive to dephasing in this limit. Unexpectedly, the fourth and higher cumulants are found to depend on dephasing: A semiclassical theory and a quantum mechanical model with strong dephasing give a different result than a fully phase-coherent quantum mechanical theory.

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