CHARGE ORDERING AND DISORDERING TRANSITIONS IN PR1-XCAXMNO3 (X=0.4) AS INVESTIGATED BY OPTICAL SPECTROSCOPY

Authors
OKIMOTO Y TOMIOKA Y ONOSE Y OTSUKA Y TOKURA Y
Citation
Y. Okimoto et al., CHARGE ORDERING AND DISORDERING TRANSITIONS IN PR1-XCAXMNO3 (X=0.4) AS INVESTIGATED BY OPTICAL SPECTROSCOPY, Physical review. B, Condensed matter, 57(16), 1998, pp. 9377-9380
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
57
Issue
16
Year of publication
1998
Pages
9377 - 9380
Database
ISI
SICI code
0163-1829(1998)57:16<9377:COADTI>2.0.ZU;2-D
Abstract
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 ferromagnet ic metallic state by a magnetic held of 6.5 T, which is manifested in a huge change of optical spectra over a wide photon-energy region (0.0 5 eV-3 eV). The observed change in magnitude and anisotropy of the opt ical spectra with the external magnetic field has been elucidated in t erms of the spin-and orbital-ordering structures in the co state. [S01 63-1829(98)51316-1].