Mechanism of colossal magnetoresistance and the role of electron correlations by virtual phonon exchange

Authors
Kaplan, MD Zimmerman, GO
Citation
Md. Kaplan et Go. Zimmerman, Mechanism of colossal magnetoresistance and the role of electron correlations by virtual phonon exchange, J PHYS CH S, 59(10-12), 1998, pp. 2218-2219
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN journal
00223697 → ACNP
Volume
59
Issue
10-12
Year of publication
1998
Pages
2218 - 2219
Database
ISI
SICI code
0022-3697(199810/12)59:10-12<2218:MOCMAT>2.0.ZU;2-
Abstract
The connection between the colossal magnetoresistance and the orbitally deg enerate d-electron correlation caused by the virtual phonon exchange is exp lored. This virtual phonon exchange is the result of the combination of the electron-phonon and electron-strain interactions with the phonon dispersio n. Two types of polarons are involved in the consideration of electrical co nductivity but the virtual phonon exchange and the corresponding electronic states ordering is crucial. (C) 1998 Elsevier Science Ltd. All rights rese rved.