Physics – Condensed Matter – Superconductivity
Scientific paper
2011-04-23
Physical Review B 84, 064435 (2011)
Physics
Condensed Matter
Superconductivity
21 pages, 10 figures
Scientific paper
In this paper we explore the magnetic and orbital properties closely related to a tetragonal-orthorhombic structural phase transition in iron pnictides based on both two- and five-orbital Hubbard models. The electron-lattice coupling, which interplays with electronic interaction, is self-consistently treated. Our results reveal that the orbital polarization stabilizes the spin density wave (SDW) order in both tetragonal and orthorhombic phases. However, the ferro-orbital density wave (F-ODW) only occurs in the orthorhombic phase rather than in the tetragonal one. Magnetic moments of Fe are small in the intermediate Coulomb interaction region for the striped antiferromangnetic phase in the realistic five orbital model. The anisotropic Fermi surface in the SDW/ODW orthorhombic phase is well in agreement with the recent angle-resolved photoemission spectroscopy experiments. These results suggest a scenario that the magnetic phase transition is driven by the ODW order mainly arising from the electron-lattice coupling.
Chen Dong-Meng
Lin Hai-Qing
Liu Da-Yong
Quan Ya-Min
Zou Liang-Jian
No associations
LandOfFree
Orbital density wave induced by electron-lattice coupling in orthorhombic iron pnictides does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Orbital density wave induced by electron-lattice coupling in orthorhombic iron pnictides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital density wave induced by electron-lattice coupling in orthorhombic iron pnictides will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-484301