Pseudogap and Mott transition studied by cellular dynamical mean-field theory

Y. Z. Zhang*, Masatoshi Imada

*この研究の対応する著者

研究成果: Article査読

76 被引用数 (Scopus)

抄録

We study metal-insulator transitions between Mott insulators and metals. The transition mechanism completely different from the original dynamical mean field theory (DMFT) emerges from a cluster extension of it. A consistent picture suggests that the quasiparticle weight Z remains nonzero through metals and suddenly jumps to zero at the transition, while the gap opens continuously in the insulators. This is in contrast with the original DMFT, where Z continuously vanishes but the gap opens discontinuously. The present results arising from electron differentiation in momentum space agree with recent puzzling bulk-sensitive experiments on CaV O3 and SrV O3.

本文言語English
論文番号045108
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
76
4
DOI
出版ステータスPublished - 2007 7月 17
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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