Exchange field induced magnetoresistance in colossal magnetoresistance manganites

Citation
In. Krivorotov et al., Exchange field induced magnetoresistance in colossal magnetoresistance manganites, PHYS REV L, 86(25), 2001, pp. 5779-5782
Citations number
17
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
25
Year of publication
2001
Pages
5779 - 5782
Database
ISI
SICI code
0031-9007(20010618)86:25<5779:EFIMIC>2.0.ZU;2-C
Abstract
The effect of an exchange field on the electrical transport in thin films o f metallic ferromagnetic manganites has been investigated. The exchange fie ld was induced both by direct exchange coupling in a ferromagnet/antiferrom agnet multilayer and by indirect exchange interaction in a ferromagnet/para magnet metallic superlattice. The electrical resistance of the metallic man ganite layers was found to be determined by the magnitude of the vector sum of the effective exchange field and the external magnetic field.