Phase separation induced by orbital degrees of freedom in models for manganites with Jahn-Teller phonons

被引：189

作者：

Yunoki, S ^{[1
]}

Moreo, A

Dagotto, E

机构：

[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

[2] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 25期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.81.5612

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The 2-orbital Kondo model with classical Jahn-Teller phonons is studied using Monte Carlo techniques. The observed phase diagram is rich and includes a novel regime of phase separation induced by the orbital degrees of freedom. Experimental consequences of our results are discussed. In addition, the optical conductivity sigma(omega) of the model is presented. It is shown to have several similarities with experimental measurements for manganites.

引用

页码：5612 / 5615

页数：4

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