Charge transfer statistics of a molecular quantum dot with strong electron-phonon interaction
Mesoscale and Nanoscale Physics
2011-02-11 v1
Abstract
We analyze the nonequilibrium transport properties of a quantum dot with a harmonic degree of freedom (Holstein phonon) coupled to metallic leads, and derive its full counting statistics (FCS). Using the Lang-Firsov (polaron) transformation, we construct a diagrammatic scheme to calculate the cumulant generating function. The electron-phonon interaction is taken into account exactly, and the employed approximation represents a summation of a diagram subset with respect to the tunneling amplitude. By comparison to Monte Carlo data the formalism is shown to capture the basic properties of the strong coupling regime.
Keywords
Cite
@article{arxiv.1010.2918,
title = {Charge transfer statistics of a molecular quantum dot with strong electron-phonon interaction},
author = {S. Maier and T. L. Schmidt and A. Komnik},
journal= {arXiv preprint arXiv:1010.2918},
year = {2011}
}