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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