Kondo tunneling through real and artificial molecules
Strongly Correlated Electrons
2009-10-31 v1 Mesoscale and Nanoscale Physics
Abstract
When a cerocene molecule is chemisorbed on metallic substrate, or when an asymmetric double dot is hybridized with itinerant electrons, its singlet ground state crosses its lowly excited triplet state, leading to a competition between the Zhang-Rice mechanism of singlet-triplet splitting in a confined cluster and the Kondo effect (which accompanies the tunneling through quantum dot under a Coulomb blockade restriction). The rich physics of an underscreened S=1 Kondo impurity in the presence of low-lying triplet/singlet excitations is exposed. Estimates of the magnetic susceptibility and the electric conductance are presented.
Cite
@article{arxiv.cond-mat/0007306,
title = {Kondo tunneling through real and artificial molecules},
author = {Konstantin Kikoin and Yshai Avishai},
journal= {arXiv preprint arXiv:cond-mat/0007306},
year = {2009}
}
Comments
4 two-column revtex pages including 1 eps figure