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
收藏
页码：10747 / 10753
页数：7
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