Spin Chirality Ordering and Anomalous Hall Effect in the Ferromagnetic Kondo Lattice Model on a Triangular Lattice
スポンサーリンク
概要
- 論文の詳細を見る
We investigate the ground-state phase diagram for the ferromagnetic Kondo lattice model on a triangular lattice by a variational calculation for various spin orderings up to a four-site unit cell. We find that a noncoplanar four-sublattice ordering with a finite scalar spin chirality emerges at and around 1/4 filling, in addition to the 3/4-filled case which was predicted to be induced by the perfect nesting of the Fermi surface. The 1/4-filling phase is stable in a wider range of parameters than the 3/4-filling one, and includes a large region of gapped insulating state characterized by a Chern number. We also compute the Hall conductivity in the chiral-ordered phases.
- 2010-08-15
著者
-
Motome Yukitoshi
Department Of Applied Physics University Of Tokyo
-
Akagi Yutaka
Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
-
Yutaka Akagi
Department of Applied Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
関連論文
- Spin Singlet State in Heptamers Emerging in Spinel Oxide AlV_2O_4(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- A Monte Carlo Method for Fermion Systems Coupled with Classical Degrees of Freedom
- Finite-Temperature Phase Transitions in Quasi-One-Dimensional Molecular Conductors(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Antiferromagnetic Ising Model on Inverse Perovskite Lattice(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Incoherent Charge Dynamics in Perovskite Manganese Oxides : Condensed Matter: Electronic Properties, etc.
- Effects of Orbital Degeneracy and Electron Correlation on Charge Dynamics in Perovskite Manganese Oxides
- Numerical Study for the Ground State of Multi-Orbital Hubbard Models
- Novel Magnetic Phases Revealed by Ultra-High Magnetic Field in the Frustrated Magnet ZnCr2O4
- Exact Diagonalization Study of Mott Transition in the Hubbard Model on an Anisotropic Triangular Lattice(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Partial Disorder in the Periodic Anderson Model on a Triangular Lattice
- Mean-Field Study of Charge, Spin, and Orbital Orderings in Triangular-Lattice Compounds ANiO2 (A = \text{Na}, Li, Ag)
- Effects of Electron Correlation,Orbital Degeneracy and Jahn-Teller Coupling in Perovskite Manganites
- Partial Disorder and Metal-Insulator Transition in the Periodic Anderson Model on a Triangular Lattice
- Spin Chirality Ordering and Anomalous Hall Effect in the Ferromagnetic Kondo Lattice Model on a Triangular Lattice
- Magnetic Phases of ZnCrO Revealed by Magneto-Optical Studies under Ultra-High Magnetic Fields of up to 600T