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

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

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 journal › Article › peer-review

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 language	English (US)
Article number	184402
Pages (from-to)	1844021-1844027
Number of pages	7
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	68
Issue number	18
State	Published - Nov 1 2003
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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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.",

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AU - DeSilva, Theja Nilantha

AU - Joshi, Anuvrat

AU - Ma, Michael

AU - Zhang, Fu Chun

PY - 2003/11/1

Y1 - 2003/11/1

N2 - 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.

AB - 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.

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JO - Physical Review B - Condensed Matter and Materials Physics

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M1 - 184402

ER -

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

Abstract

ASJC Scopus subject areas

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