Local density of states on a vibrational quantum dot out of equilibrium

Abstract

We calculate the nonequilibrium local density of states on a vibrational quantum dot coupled to two electrodes at T=0 using a numerically exact diagrammatic Monte Carlo method. Our focus is on the interplay between the electron-phonon interaction strength and the bias voltage. We find that the spectral density exhibits a significant voltage dependence if the voltage window includes one or more phonon sidebands. A comparison with well-established approximate approaches indicates that this effect could be attributed to the nonequilibrium distribution of the phonons. Moreover, we discuss the long transient dynamics caused by the electron-phonon coupling.

arXiv comment9 pages, 11 figures

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Cited by in corpus (5)

• Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems: Reservoir formulation and application to vibrational instabilities
• Transient dynamics and waiting time distribution of molecular junctions in the polaronic regime
• The Anderson--Holstein Model in Two Flavors of the Non--Crossing Approximation
• Transient dynamics in interacting nanojunctions within self-consistent perturbation theory
• Adiabatic Green's function technique and the transient behavior in time-dependent fermion-boson coupled models