Dynamical cluster approximation for study of non-local correlations in the periodic anderson model

研究成果: Article査読

抄録

The single particle excitation spectrum of the periodic Anderson model in two dimensions is calculated by using the dynamical cluster approximation (DC A). The DC A method restores the short ranged inter-site correlations which are neglected in the dynamical mean field approximation. For the half filling model the resoance peak at the Fermi level is suppressed due to the anti-feromagnetic RKKY-like interaction. When the filling of the conduction electron band is small, there is a sharp coherence peak. It can be explaind that the effect of the RKKY-like interaction is weaker than that for the half filling model. For the intermediate filling model the intensity of the coherence peak becomes very small.

本文言語English
ページ(範囲)228-230
ページ数3
ジャーナルjournal of the physical society of japan
71
SUPPL.
出版ステータスPublished - 2002 12 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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