Jahn-Teller distortion and electronic correlation effects in undoped manganese perovskites

被引：32
作者：
Benedetti, P [1 ]
Zeyher, R [1 ]
机构：
[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
来源：
PHYSICAL REVIEW B | 1999年 / 59卷 / 15期
关键词：
D O I：
10.1103/PhysRevB.59.9923
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The formation of a long-range Jahn-Teller distortion in undoped manganites is studied within the dynamical mean-field theory taking both electron-phonon and electron-electron interactions into account. We find that the observed insulating behavior at temperatures above the Jahn-Teller transition and the bond-length changes below it can most naturally be explained by assuming a strong electronic repulsion and a rather weak electron-phonon coupling. [S0163-1829(99)03815-1].
引用
收藏
页码：9923 / 9928
页数：6
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