期刊论文详细信息
Theory for spin and orbital orderings in high-temperature phases in YVO3 | |
Article | |
关键词: TRANSITION-METAL OXIDES; MAGNETIC-PROPERTIES; INSULATING V2O3; MOTT-INSULATOR; LAVO3; SUSCEPTIBILITY; EXCHANGE; BEHAVIOR; | |
DOI : 10.1103/PhysRevB.68.184402 | |
来源: SCIE |
【 摘 要 】
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 similar to200 K and the spin phase transition at similar to114 K in YVO3.
【 授权许可】
Free