Complex-Orbital Ordering and Verwey Transition in Fe_3O_4(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
スポンサーリンク
概要
- 論文の詳細を見る
The charge and orbital orderings above and below the Verwey transition in magnetite (Fe_3O_4) have been investigated using a three-band model for electrons with minority spins in the t_<2g> orbitals on the B sites with a mean-field approximation. For the high-temperature phase above the Verwey transition, an orbital ordered state with spontaneous breaking of the time reversal symmetry having noncollinear orbital moments is obtained as the lowest energy solution. The result is in contrast to usual magnetic materials, in which the orbital moments are induced by ordered spins via the spin-orbit interaction. For the low-temperature phase, a similar orbital ordering with longer periodicity accompanied by charge disproportionation caused by a monoclinic lattice distortion is proposed.
- 社団法人日本物理学会の論文
- 2006-04-15
著者
-
Tanaka Arata
Hiroshima Univ. Hiroshima Jpn
-
Tanaka Arata
Department Of Quantum Matter Adsm Hiroshima University
-
Tanaka Arata
Department Of Materials Science Faculty Of Science Hiroshima University
-
UZU Hisashi
Department of Quantum Matters, ADSM, Hiroshima University
-
Uzu Hisashi
Hiroshima Univ. Hiroshima
-
Uzu Hisashi
Department Of Quantum Matters Adsm Hiroshima University
-
TANAKA Arata
Department of Quantum Matters, ADSM, Hiroshima University
関連論文
- Complete Assignment of Spin Domains in Antiferromagnetic NiO(100) by Photoemission Electron Microscopy and Cluster Model Calculation
- Strong 3d-Ligand Hybridization in TiO_2 and Satellite Structures in Ti 3d and 3p Photoemission
- Configuration Interaction in Ni Metal and Ni Alloys and High-Energy Spectroscopy
- On the Metal-Insulator Transitions in VO_2 and Ti_2O_3 from a Unified Viewpoint(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Electronic Structure and Phase Transition in V_2O_3 : Importance of 3d Spin-Orbit Interaction and Lattice Distortion
- Intersite Effects on Valence Band Photoemission Spectra of Undoped CuO_2 Plane and CuO_3 Chain
- Magnetic Circular Dichroism of 3d-2p and 4d-2p X-Ray Emission in Rare Earths
- Resonant Inverse Photoemission and Many-Body Effect in Nickel
- Effect of Electron Doping on Spectral Function of Cu-Oxide Cluster Model Including Full Multiplet : Shift of Valence Band Edge
- Theory of Resonant Inverse Photoemission Spectroscopy in Ce Compounds : Selection Rule and Hybridization Strength
- Spin Polarization of 3d, 3p and 3s Photoemission in Ferromagnetic Nickel Predicted at Ni 2p Core Threshold
- Selection Rules in Resonant 4f Photoemission for Rare Earths
- Resonant 3d, 3p and 3s Photoemission in Transition Metal Oxides Predicted at 2p Threshold
- Capability of Resonant Photoemission with Soft X-Rays in Rare-Earth Systems
- Spin Polarization of 3d Photoemission at 3p Threshold in Ferromagnetic Ni Expected from Configuration Interaction Model
- Resonances in 3d Electron Photoemission Predicted at Ni2p Threshold for NiCl_2 and NiO
- Complex-Orbital Ordering and Verwey Transition in Fe_3O_4(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Complex-Orbital Order in Fe_3O_4 and Mechanism of the Verwey Transition(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- A New Scenario on the Metal-Insulator Transition in VO_2 (Condensed Matter: Electric Structure, Electrical, Magnetic and Optical Properties)
- Temperature Dependence of 2p-Core X-Ray Absorption Spectra in 3d Transition-Metal Compounds
- A New Scenario on the Metal-Insulator Transition in VO_2
- On the Metal-Insulator Transitions in VO_2 and Ti_2O_3 from a Unified Viewpoint
- Resonances and Magnetic Circular Dichrosim in Valence-Band Photoemission Predicted at Ni 2p Threshold for Ferromagnetic Nickel
- Effect of Coulomb Interaction on the X-Ray Magnetic Circular Dichroism Spin Sum Rule in Rare Earths
- Effect of Coulomb Interaction on the X-Ray Magnetic Circular Dichroism Spin Sum Rule in 3d Transition Elements
- Complete Assignment of Spin Domains in Antiferromagnetic NiO(100) by Photoemission Electron Microscopy and Cluster Model Calculation