Exchange field induced magnetoresistance in colossal magnetoresistance manganites

Exchange field induced magnetoresistance in colossal magnetoresistance manganites

The effect of an exchange field on the electrical transport in thin films of metallic ferromagnetic manganites has been investigated. The exchange field was induced both by direct exchange coupling in a ferromagnet/antiferromagnet multilayer and by indirect exchange interaction in a ferromagnet/para...

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Veröffentlicht in:Physical review letters 2001-06, Vol.86 (25), p.5779-5782
Hauptverfasser: Krivorotov, I N, Nikolaev, K R, Dobin, A Y, Goldman, A M, Dahlberg, E D
Format: Artikel
Sprache:eng
Schlagworte:
ELECTRIC CONDUCTIVITY
EXCHANGE INTERACTIONS
MAGNETIC FIELDS
MAGNETORESISTANCE
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
THIN FILMS
TRANSPORT
VECTORS
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Zusammenfassung:The effect of an exchange field on the electrical transport in thin films of metallic ferromagnetic manganites has been investigated. The exchange field was induced both by direct exchange coupling in a ferromagnet/antiferromagnet multilayer and by indirect exchange interaction in a ferromagnet/paramagnet metallic superlattice. The electrical resistance of the metallic manganite layers was found to be determined by the magnitude of the vector sum of the effective exchange field and the external magnetic field.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.86.5779