Bloch electrons in a Jahn-Teller crystal and an orbital-density-wave state due to the Berry phase

被引：27

作者：

Koizumi, H ^{[1
]}

Hotta, T

Takada, Y

机构：

[1] Himeji Inst Technol, Fac Sci, Kamigori, Hyogo 6781297, Japan

[2] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.80.4518

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of the Berry phase is included explicitly in the wave function describing conduction electrons in a crystal composed of periodically arrayed Jahn-Teller centers that have conically intersecting potential energy surfaces. The Berry phase can make a drastic change in the band structure, leading generally to the formation of an orbital-density-wave state. We discuss implications of our theory and possible relations to the orbital ordering observed in the manganese perovskites.

引用

页码：4518 / 4521

页数：4

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