Metal-insulator transition in Mn perovskite compounds

Yukitoshi Motome, Hiroki Nakano, Masatoshi Imada

研究成果: Conference article査読

3 被引用数 (Scopus)

抄録

We discuss Mott insulating and metallic phases of a model with eg orbital degeneracy with regard to understanding the physics of Mn perovskite compounds. Quantum Monte Carlo (QMC) and Lanczos diagonalization (LD) results are discussed in this model. To reproduce experimental results on charge gap and Jahn-Teller distortions, we show that a synergy between the strong correlation effects and the Jahn-Teller coupling is important. The incoherent charge dynamics and strong charge fluctuations are characteristic of the metallic phase accompanied with critical enhancement of short-ranged orbital correlation near the insulator.

本文言語English
ページ(範囲)58-64
ページ数7
ジャーナルMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
63
1
DOI
出版ステータスPublished - 1999 8月 16
外部発表はい
イベントProceedings of the 1998 7th NEC Symposium on Fundamental Approaches to New Material Phases: Phase Control in Spin-Charge-Orbital Complex Systems - Nasu, Jpn
継続期間: 1998 10月 111998 10月 15

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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