CrO2: a self-doped double exchange ferromagnet

Preprint

9 May 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9705091

Abstract

Band structure calculations of CrO2 carried out in the LSDA+U approach reveal a clear picture of the physics behind the metallic ferromagnetic properties. Arguments are presented that the metallic ferromagnetic oxide CrO2 belongs to a class of materials in which magnetic ordering exists due to double exchange (in this respect CrO2 turns out to be similar to the CMR manganates). It is concluded that CrO2 has small or even negative charge transfer gap which can result in self-doping. Certain experiments to check the proposed picture are suggested.

Keywords

BAND STRUCTURE
CRO2
DOPED DOUBLE
DOPING
DOUBLE EXCHANGE
EXCHANGE FERROMAGNET
FERROMAGNETIC
MANGANATES
STRUCTURE CALCULATIONS
FERROMAGNET BAND

All Related Versions

Version 1, 1997-05-09, ArXiv
Published version: Physical Review Letters, 80 (19), 4305.

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