Photon-Phonon-assisted tunneling through a single-molecular quantum dot
Abstract
Based on exactly mapping of a many-body electron-phonon interaction problem onto a one-body problem, we apply the well-established nonequilibrium Green function technique to solve the time-dependent phonon-assisted tunneling at low temperature through a single-molecular quantum dot connected to two leads, which is subject to a microwave irradiation field. It is found that in the presence of the electron-phonon interaction and the microwave irradiation field, the time-average transmission and the nonlinear differential conductance display additional peaks due to pure photon absorption or emission processes and photon-absorption-assisted phonon emission processes. The variation of the time-average current with frequency of the microwave irradiation field is also studied.
Cite
@article{arxiv.cond-mat/0402684,
title = {Photon-Phonon-assisted tunneling through a single-molecular quantum dot},
author = {Bing Dong and H. L. Cui and X. L. Lei},
journal= {arXiv preprint arXiv:cond-mat/0402684},
year = {2009}
}
Comments
9 pages, 6 figures, submitted to Phys. Rev. B. accepted by Phys. Rev. B