Theory for spin and orbital orderings in high-temperature phases in YVO3

Theja Nilantha DeSilva, Anuvrat Joshi, Michael Ma, Fu Chun Zhang

Research output: Contribution to journalArticle

Abstract

Motivated by the recent neutron-diffraction experiment on YVO3, we consider a microscopic model where each V3+ ion is occupied by two 3d electrons of parallel spins with twofold-degenerate orbital configurations. The mean-field classical solutions of the spin-orbital superexchange model predicts an antiferro-orbital ordering at a higher temperature followed by a C-type antiferromagnetic spin ordering at a lower temperature. Our results are qualitatively consistent with the observed orbital phase transition at ∼200 K and the spin phase transition at ∼114 K in YVO3.

Original languageEnglish (US)
Article number184402
Pages (from-to)1844021-1844027
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number18
StatePublished - Nov 1 2003
Externally publishedYes

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Phase transitions
orbitals
Neutron diffraction
Ions
Temperature
Electrons
neutron diffraction
Experiments
configurations
ions
electrons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Theory for spin and orbital orderings in high-temperature phases in YVO3 . / DeSilva, Theja Nilantha; Joshi, Anuvrat; Ma, Michael; Zhang, Fu Chun.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 68, No. 18, 184402, 01.11.2003, p. 1844021-1844027.

Research output: Contribution to journalArticle

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