Origin of In-Plane Anisotropy in Optical Conductivity for Antiferromagnetic Metallic Phase of Iron Pnictides
スポンサーリンク
概要
- 論文の詳細を見る
We examine the optical conductivity in antiferromagnetic (AFM) iron pnictides by mean-field calculation in a five-band Hubbard model. The calculated spectra are well consistent with the in-plane anisotropy observed in the measurements, where the optical conductivity along the direction with the AFM alignment of neighboring spins is larger than that along the ferromagnetic (FM) direction in the low-energy region; however, that along the FM direction becomes larger in the higher-energy region. The difference between the two directions is explained by taking account of orbital characters in both occupied and unoccupied states as well as of the nature of Dirac-type linear dispersions near the Fermi level.
- 2011-03-15
著者
-
Tohyama Takami
Yukawa Inst. For Theoretical Physics Kyoto Univ.
-
Tohyama Takami
Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
-
Sugimoto Koudai
Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
-
Kaneshita Eiji
Sendai National College of Technology, Sendai 989-3128, Japan
関連論文
- Induced Order in Nonequivalent Two-Leg Hubbard Ladder(Condensed Matter Physics)
- Effect of Electron-Phonon Interaction on Optical Properties in One-Dimensional Mott Insulators(Interaction and Nanostructural Effects in Low-Dimensional Systems)
- Possible Verification of Tilted Anisotropic Dirac Cone in α-(BEDT-TTF)_2I_3 Using Interlayer Magnetoresistance(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- 22aWJ-1 Introduction to the symposium "Recent progress in high-Tc superconductivity through multi-layered cuprates"(Recent Progress in High-Tc Superconductivity Through Multi-Layered Cuprates -Interplay of Antiferromagnetism and Superconductivity-)
- Significance of off-center rattling for emerging low-lying THz modes in type-1 clathrates
- Origin of In-Plane Anisotropy in Optical Conductivity for Antiferromagnetic Metallic Phase of Iron Pnictides
- Relaxation Dynamics of Photocarriers in One-Dimensional Mott Insulators Coupled to Phonons
- Nuclear Quadrupole Resonance Frequency in Multilayered Cuprates
- Recent Progress in Physics of High-Temperature Superconductors (Centennial Anniversary of Superconductivity)
- Analysis of Resonant Inelastic X-ray Scattering in Stripe-Ordered Nickelate
- Spin Excitation Assisted by Non-Softening Phonon for Spin-Peierls Model
- 26pAA-9 Helical Spin Order in SrFeO_3 and BaFeO_3
- Effect of Fermi Surface Topology on Inter-Layer Magnetoresistance in Layered Multiband Systems: Application to LaFeAsO1-xFx