Enhanced Spin-Orbit Coupling in a Correlated Metal
強相関金属におけるスピン軌道相互作用の増強
久保 勝規
Kubo, Katsunori
We investigate the correlation effects on spin-orbit coupling (SOC) in a two-orbital Hubbard model on a square lattice by applying the variational Monte Carlo method. We consider an effective SOC constant in the one-body part of the variational wave function and mainly discuss the cases of the electron number per site , that is, quarter filling. interaction. Increasing the electron-electron interactions in the paramagnetic phase leads to a transition to an effective one-band state, in which the upper band becomes empty due to the enhanced . We also construct phase diagrams considering magnetic order. The carrier doping effect on is also investigated. We find that enhances in a strongly correlated region around the Mott transition point and it is necessary to include the correlation effects beyond the Hartree-Fock approximation to describe the enhanced SOC properly.
- 登録番号 : AA20220535
- 抄録集掲載番号 : 50001177
- 論文投稿番号 : 25935
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