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 |
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ページ(範囲) | 45-48 |
ページ数 | 4 |
ジャーナル | journal of the physical society of japan |
巻 | 67 |
号 | 1 |
DOI | |
出版ステータス | Published - 1998 1月 |
外部発表 | はい |
ASJC Scopus subject areas
- 物理学および天文学(全般)