Electronic transport through molecular transistors in the polaronic regime

2013/07/30 by Rubén Seoane Souto, A. Levy Yeyati, Souto, R. Seoane +5
Engineering · Physics and Astronomy · #FOS: Physical sciences #Mechanical and Optical Resonators #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena

paper · pdf · doi:10.48550/arxiv.1307.8008

openalex publication_date 2013/07/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

In this work, a new theoretical approach to study the non-equilibrium transport properties of nanoscale systems coupled to metallic electrodes with strong electron-phonon interactions is presented. The proposed approach consists in a resummation of the dominant Feynman diagrams from the exact preturbative expansion. This scheme is compared with methods that can be found in the literature. It shows a good agreement with these methods in the range where they are known to provide good results, for a wide range of parameters. Also, it is compared with path-integral Monte Carlo calculations giving a relatively good agreement for polaronic and non polaronic regimes. Some preliminary results for the current noise obtained with our method are presented.

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