Suppressed Coherence due to Orbital Correlations in the Ferromagnetically Ordered Metallic Phase of Mn Compounds

Masatoshi Imada*

*この研究の対応する著者

研究成果査読

15 被引用数 (Scopus)

抄録

Small Drude weight D together with small specific heat coefficient γ observed in the ferromagnetic phase of R1-xAxMnO3 (R=La, Pr, Nd, Sm; A=Ca, Sr, Ba) are analyzed in terms of a proximity effect of the Mott insulator. The scaling theory for the metal-insulator transition with the critical enhancement of orbital correlations toward the staggered ordering of two eg orbitals such as 3x2 - r2 and 3y2 - r2 symmetries may lead to the critical exponents of D ∞ δu and γ ∞ δv with u = 3/2 and v = 0. The result agrees with the experimental indications.

本文言語English
ページ(範囲)45-48
ページ数4
ジャーナルjournal of the physical society of japan
67
1
DOI
出版ステータスPublished - 1998 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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