Superexchange interaction in orbitally fluctuating RVO3

TitleSuperexchange interaction in orbitally fluctuating RVO3
Publication TypeJournal Article
Year of Publication2007
AuthorsZhou JS, Goodenough JB, Yan JQ, Ren Y
Journal TitlePhysical Review Letters
Volume99
Pages156401
Date PublishedOct
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberISI:000250140600050
KeywordsEXCHANGE INTERACTION, MAGNETIC TRANSITION
Abstract

Changes in pressure and magnetic field in the orbital and magnetic ordering temperatures of RVO3 perovskites are reported; they reveal a competition between two magnetic orbitally ordered phases that have opposite preferences for the e-orbital component in the localized T-3(1g) ground state of the V3+ ion. This competition is shown to be biased by the VO6/2 site distortion intrinsic to the orthorhombic structure. A remarkable enhancement of T-N with pressure is found where the competition leads to enhanced orbital critical fluctuations.

DOI10.1103/PhysRevLett.99.156401
Alternate JournalPhys. Rev. Lett.