Incoherent charge dynamics in perovskite manganese oxides

Hiroki Nakano, Yukitoshi Motome, Masatoshi Imada

研究成果: Article査読

11 被引用数 (Scopus)

抄録

A minimal model is proposed for the perovskite manganese oxides showing strongly incoherent charge dynamics with a suppressed Drude weight in the ferromagnetic and metallic phase near the insulator. We investigate a generalized double-exchange model which includes three elements; the orbital degeneracy of eg conduction bands, the Coulomb interaction and fluctuating Jahn-Teller distortions. We demonstrate that Lanczös diagonalization calculations combined with Monte Carlo sampling of the largely fluctuating lattice distortions result in the optical conductivity which quantitatively accounts for the experimental indications. It is found that all three elements are indispensable for understanding the charge dynamics in these compounds.

本文言語English
ページ(範囲)1282-1285
ページ数4
ジャーナルjournal of the physical society of japan
69
5
DOI
出版ステータスPublished - 2000 5
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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