Effects of Exchange Symmetry on Full Counting Statistics

Details Effects of Exchange Symmetry on Full Counting Statistics Effects of Exchange Symmetry on Full Counting Statistics

2006-12-29

arxiv.org/abs/cond-mat/0612693v2

Phys. Rev. Lett. 99, 076804 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 3 figures, one figure and a more physical explanation of the effect added

Scientific paper

10.1103/PhysRevLett.99.076804

We study the full counting statistics for the transmission of two identical particles with positive or negative symmetry under exchange for the situation where the scattering depends on energy. We find that, besides the expected sensitivity of the noise and higher cumulants, the exchange symmetry has a huge effect on the average transmitted charge; for equal-spin exchange-correlated electrons, the average transmitted charge can be orders of magnitude larger than the corresponding value for independent electrons. A similar, although smaller, effect is found in a four-lead geometry even for energy-independent scattering.

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