Designing ferromagnetism in vanadium oxide based superlattices

Motivated by recent reports [Luders et al., Phys. Rev. B 80, 241102 (2009) (http://dx.doi.org/10.1103/PhysRevB.80.241102)] of room-temperature ferromagnetism in vanadium oxide based superlattices, a single-site dynamical mean-field study of the dependence of the paramagnetic-ferromagnetic phase boun...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2013-05, Vol.87 (18), Article 184434
Main Authors: Dang, Hung T., Millis, Andrew J.
Format: Article
Language:English
Subjects:
Condensed matter
Criteria
Crystal structure
Ferromagnetism
Phase boundaries
Phase diagrams
Superlattices
Vanadium oxides
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Summary:Motivated by recent reports [Luders et al., Phys. Rev. B 80, 241102 (2009) (http://dx.doi.org/10.1103/PhysRevB.80.241102)] of room-temperature ferromagnetism in vanadium oxide based superlattices, a single-site dynamical mean-field study of the dependence of the paramagnetic-ferromagnetic phase boundary on superlattice geometry was performed. An examination of variants of the experimentally determined crystal structure indicate that ferromagnetism is found only in a small and probably inaccessible region of the phase diagram. Design criteria for increasing the range over which ferromagnetism might exist are proposed.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.87.184434