Optical response to orbital and charge ordering in a layered manganite:: La1/2Sr3/2MnO4

被引：70

作者：

Ishikawa, T

Ookura, K

Tokura, Y

机构：

[1] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[2] Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 3050046, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.59.8367

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Change of electronic and lattice structures upon the orbital and charge-ordering (OO-CO) transition has been investigated for a single-layer manganite crystal of La1/2Sr3/2MnO4. The optical birefringence signal probes the orbital-ordering-induced anisotropy in the originally tetragonal MnO2 lattice. In the course of the OO-CO transition, the conductivity spectrum shows a significant change over a wide energy region (0-3 eV), forming a prominent peak around 1.3 eV as well as producing activated phonon modes. [S0163-1829(99)08413-1].

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页码：8367 / 8370

页数：4

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