Metal-insulator transition in Mn perovskite compounds

Yukitoshi Motome, Hiroki Nakano, Masatoshi Imada

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)58-64
Number of pages7
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume63
Issue number1
DOIs
Publication statusPublished - 1999 Aug 16
Externally publishedYes
EventProceedings of the 1998 7th NEC Symposium on Fundamental Approaches to New Material Phases: Phase Control in Spin-Charge-Orbital Complex Systems - Nasu, Jpn
Duration: 1998 Oct 111998 Oct 15

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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