Incoherent metallic state in a double-exchange ferromagnet: transport and optical properties of La1-xSrxMnO3

Authors
Takenaka, K Sawaki, Y Osuka, A Shiozaki, R Sugai, S
Citation
K. Takenaka et al., Incoherent metallic state in a double-exchange ferromagnet: transport and optical properties of La1-xSrxMnO3, J PHYS CH S, 62(1-2), 2001, pp. 313-315
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN journal
00223697 → ACNP
Volume
62
Issue
1-2
Year of publication
2001
Pages
313 - 315
Database
ISI
SICI code
0022-3697(200101/02)62:1-2<313:IMSIAD>2.0.ZU;2-A
Abstract
Transport and optical studies on La0.825Sr0.175MnO3 indicate that the charg e dynamics undergoes a coherent-incoherent crossover at a certain critical region of the de conductivity. The present result suggests that the ferroma gnetic metallic phase below the Curie temperature Te is divided into two re gions, a "high-temperature incoherent" metallic and a "low-temperature cohe rent" metallic region. "Colossal magnetoresistance" is a characteristic of the former region. (C) 2000 Elsevier Science Ltd. All rights reserved.