Spin-orbital pattern dependent polaron absorption in manganites

被引：29

作者：

Kim, MW

Jung, JH

Kim, KH

Lee, HJ

Yu, J

Noh, TW ^{[1
]}

Moritomo, Y

机构：

[1] Seoul Natl Univ, Sch Phys, Seoul 151747, South Korea

[2] Seoul Natl Univ, Res Ctr Oxide Elect, Seoul 151747, South Korea

[3] Seoul Natl Univ, Ctr Strongly Correlated Mat Res, Seoul 151747, South Korea

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

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.89.016403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We systematically investigated optical properties of Nd1-xSr xMnO3 single crystals (x=0.40 , 0.50, 0.55, and 0.65). They are similar in their spin-orbital (SO) disordered states at room temperature. At low temperature, the crystals enter into various SO ordered states, i.e., F -, CE -, A -, and C -type orderings, and their mid-infrared absorptions become quite different. The remarkable variation can be explained by polaron dynamics which depend on the ordering patterns. This SO pattern dependent polaron model can also explain the pseudo CE-type ordering case, demonstrating that this scheme can explain the carrier dynamics in complex SO configurations.

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收藏

页码：164031 / 164034

页数：4

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