Interplay between local electron correlation and Janh-Teller electron-phonon interaction
强关联电子
2009-11-11 v1
摘要
The infinite- Anderson model coupled to a Jahn-Teller phonon is studied using the slave boson method on the basis of the large degeneracy expansion (1/N) scheme. The model Hamiltonian acts on the orbital degrees of freedom. The main focus is on the interplay between strong local electron correlation and weak Jahn-Teller electron-phonon interaction. The Kondo temperature is found to decrease by Jahn-Teller interaction. The influence of the Jahn-Teller interaction on dynamical correlation functions is very significant in sharp contrast with the case of the Holstein-type phonon which couples to charge degrees of freedom.
引用
@article{arxiv.cond-mat/0603449,
title = {Interplay between local electron correlation and Janh-Teller electron-phonon interaction},
author = {Choong H. Kim and Hyun C. Lee},
journal= {arXiv preprint arXiv:cond-mat/0603449},
year = {2009}
}