Anti-Jahn-Teller polaron in LaMnO3

被引：58

作者：

Allen, PB ^{[1
]}

Perebeinos, V ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 15期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.60.10747

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Distortions of the oxygen sublattice couple to e(g) orbitals of Mn3+ and drive a cooperative Jahn-Teller (orbital ordering) transition in LaMnO3. A simple model for this transition is studied. Without further adjustment, the model predicts the shape and stability of small (anti-Jahn-Teller) polarons that form when holes are doped into the material. This leads to a new description of the lightly-doped insulator, the antiferromagnetic to ferromagnetic transition, and the metal-insulator transition. [S0163-1829(99)12639-0].

引用

页码：10747 / 10753

页数：7

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