Kondo Effect in an Electron System with Dynamical Jahn-Teller Impurity
Strongly Correlated Electrons
2009-11-11 v1
Abstract
We investigate how Kondo phenomenon occurs in the Anderson model dynamically coupled with local Jahn-Teller phonons. It is found that the total angular moment composed of electron pseudo-spin and phonon angular moments is screened by conduction electrons. Namely, phonon degrees of freedom essentially contribute to the formation of singlet ground state. A characteristic temperature of the Kondo effect due to dynamical Jahn-Teller phonons is explained by an effective - Hamiltonian with anisotropic exchange interaction obtained from the Jahn-Teller-Anderson model in a non-adiabatic region.
Cite
@article{arxiv.cond-mat/0612657,
title = {Kondo Effect in an Electron System with Dynamical Jahn-Teller Impurity},
author = {Takashi Hotta},
journal= {arXiv preprint arXiv:cond-mat/0612657},
year = {2009}
}
Comments
5 pages, 3 figures