Nanoscale magnetism in the chalcogenide spinel FeCr2S4: Common origin of colossal magnetoresistivity

Amar Nath, Zoltán Klencsár, Erno Kuzmann, Zoltán Homonnay, Attila Vértes, Athanassios Simopoulos, Eamonn Devlin, George Kallias, Arthur P. Ramirez, Robert J. Cava

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Most of the models purporting to explain the intriguing observation of colossal magnetoresistivity (CMR) in manganites invoke double exchange (DE) electron transfer between Mn3+ and Mn4+ ions, and coupling between the itinerant electrons and the dynamic Jahn-Teller (J-T) lattice distortions. Here we report using Mössbauer spectroscopy some very revealing commonalities in the magnetic behavior of FeCr2S4, which is representative of systems that do not exhibit DE electron transfer nor J-T distortions. These observations shed light on the origin of intrinsic CMR in general.

Original languageEnglish
Article number212401
Pages (from-to)2124011-2124014
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number21
Publication statusPublished - Dec 1 2002

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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