Nonequilibrium electron transport in strongly correlated molecular junctions
Strongly Correlated Electrons
2015-05-13 v1 Mesoscale and Nanoscale Physics
Abstract
We investigate models of molecular junctions which constitute minimal Hamiltonians to account for zero-bias-anomaly and the satellite features of inelastic transport by molecular phonons. Through nonlinear transport calculations with the imaginary-time nonequilibrium formalism, a HOMO-LUMO model with Anderson-Holstein interaction is shown to produce co-tunneling conductance peak in the vicinity of Kondo resonance which is mediated by a re-emergent many-body resonance assisted by phonon excitations at bias equal to the phonon frequency. Destruction of the resonance leads to negative-differential-resistance in the sequential tunneling regime.
Cite
@article{arxiv.0906.5577,
title = {Nonequilibrium electron transport in strongly correlated molecular junctions},
author = {J. E. Han},
journal= {arXiv preprint arXiv:0906.5577},
year = {2015}
}