Charge ordering and disordering transitions in Pr1-xCaxMnO3 (x=0.4) as investigated by optical spectroscopy

被引：121

作者：

Okimoto, Y

Tomioka, Y

Onose, Y

Otsuka, Y

Tokura, Y

机构：

[1] Univ Tokyo, Dept Appl Phys, Tokyo 113, Japan

[2] Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.57.R9377

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic-field dependence of optical spectra and their anisotropy have been investigated for a single crystal of Pr1-xCaxMnO3 (x=0.4) at 30 K. The charge-ordered (CO) state is transformed into a ferromagnetic metallic state by a magnetic field of 6.5 T, which is manifested in a huge change of optical spectra over a wide photon-energy region (0.05 eV-3 eV). The observed change in magnitude and anisotropy of the optical spectra with the external magnetic field has been elucidated in terms of the spin- and orbital-ordering structures in the co state. [S0163-1829(98)51316-1].

引用

收藏

页码：R9377 / R9380

页数：4

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