Vibration-induced Kondo tunneling through metal-organic complexes with even electron occupation number
Strongly Correlated Electrons
2007-05-23 v1 Mesoscale and Nanoscale Physics
Abstract
We investigate transport through a mononuclear transition-metal complex with strong tunnel coupling to two electrodes. The ground state of this molecule is a singlet while the first excited state is a triplet. We show that a modulation of the tunnel-barrier due to a molecular distortion which couples to the tunneling induces a Kondo-effect, provided the discrete vibrational energy compensates the singlet/triplet gap. We discuss the single-phonon and two-phonon assisted co-tunneling and possible experimental realization of the theory.
Keywords
Cite
@article{arxiv.cond-mat/0511369,
title = {Vibration-induced Kondo tunneling through metal-organic complexes with even electron occupation number},
author = {K. Kikoin and M. N. Kiselev and M. R. Wegewijs},
journal= {arXiv preprint arXiv:cond-mat/0511369},
year = {2007}
}
Comments
4 pages, 3 eps figures