Electronic structure of LaFeAsO: yz/zx orbital degeneracy and excitonic instability

Takashi Mizokawa, Takaaki Sudayama, Yuki Wakisaka

研究成果: Article査読

14 被引用数 (Scopus)

抄録

We have studied the electronic structure of the FeAs layer in LaFeAsO using unrestricted Hartree-Fock calculations on a multi-orbital d-p Hamiltonian. Based on the calculated results, we argue that the antiferromagnetism of LaFeAsO is derived from the excitonic effect between the hole pocket at the Γ point and the electron pocket at the M point that is coupled with the band Jahn-Teller effect due to the yz/zx orbital degeneracy at the Γ point.

本文言語English
ページ(範囲)158-159
ページ数2
ジャーナルjournal of the physical society of japan
77
SUPPL. C
DOI
出版ステータスPublished - 2008 1 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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