X-Ray effects in charge-ordered manganites: a magnetic mechanism of persistent photoconductivity

Authors
Keimer, B Casa, D Kiryukhin, V Saleh, OA Hill, JP Tomioka, Y Tokura, Y
Citation
B. Keimer et al., X-Ray effects in charge-ordered manganites: a magnetic mechanism of persistent photoconductivity, MAT SCI E B, 63(1-2), 1999, pp. 30-35
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
63
Issue
1-2
Year of publication
1999
Pages
30 - 35
Database
ISI
SICI code
0921-5107(19990816)63:1-2<30:XEICMA>2.0.ZU;2-#
Abstract
Charge-ordered manganites of composition Pr1-x(Ca1-ySry),MnO3 exhibit persi stent photo-conductivity when illuminated by X-rays. We review transport an d X-ray diffraction data as functions of X-ray exposure, magnetic field, an d temperature which shed light on the origin of this unusual behavior. The experimental evidence suggests that the mechanism primarily involves a ferr omagnetic polarization of local spins by hot electrons generated by the X-r ays. (C) 1999 Elsevier Science S.A. All rights reserved.