Optical investigations of the charge gap in orbital-ordered La1/2Sr3/2MnO4

被引：28

作者：

Jung, JH ^{[1
]}

Ahn, JS

Yu, J

Noh, TW

Lee, J

Moritomo, Y

Solovyev, I

Terakura, K

机构：

[1] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea

[2] Seoul Natl Univ, Ctr Strongly Correlated Mat Res, Seoul 151742, South Korea

[3] Sogang Univ, Dept Phys, Seoul 121742, South Korea

[4] Nagoya Univ, CIRSE, Nagoya, Aichi 4648603, Japan

[5] JST, PRESTO, Chiyoda Ku, Tokyo 102, Japan

[6] Natl Inst Adv Interdisciplinary Res, JRCAT, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.61.6902

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Temperature and polarization dependent electronic structure of La1/2Sr3/2MnO4 was investigated by optical conductivity analyses. With decreasing temperature, a broad midinfrared peak in the optical conductivity for E parallel to ab of La1/2Sr3/2MnO4 becomes narrower and shifts toward a higher frequency, and, furthermore, its optical gap significantly increases. We showed that such a temperature-dependent behavior of La1/2Sr3/2MnO4 is the result of cooperative enhancement of the orbital ordering stabilized by the CE-type magnetic ordering and the Jahn-Teller distortion.

引用

页码：6902 / 6906

页数：5

共 27 条

[1] ORDERING AND ANTIFERROMAGNETISM IN FERRITES [J].