Electron-hole Asymmetry and Quantum Critical Point in Hole-doped BaFe$_2$As$_2$
| dc.creator | Xu, Gang | |
| dc.creator | Zhang, Haijun | |
| dc.creator | Dai, Xi | |
| dc.creator | Fang, Zhong | |
| dc.date | 2008-07-09 | |
| dc.date.accessioned | 2026-07-07T12:27:53Z | |
| dc.date.available | 2026-07-07T12:27:53Z | |
| dc.description | We show, from first-principles calculations, that the hole-doped side of FeAs-based compounds is different from its electron-doped counterparts. The electron side is characterized as Fermi surface nesting, and SDW-to-NM quantum critical point (QCP) is realized by doping. For the hole-doped side, on the other hand, orbital-selective partial orbital ordering develops together with checkboard antiferromagnetic (AF) ordering without lattice distortion. A unique SDW-to-AF QCP is achieved, and $J_2$=$J_1/2$ criteria (in the approximate $J_1&J_2$ model) is satisfied. The observed superconductivity is located in the vicinity of QCP for both sides. | |
| dc.description | 4 pages | |
| dc.identifier | https://arxiv.org/abs/0807.1401 | |
| dc.identifier | http://arxiv.org/abs/0807.1401 | |
| dc.identifier | EPL, 84 (2008) 67015 | |
| dc.identifier | doi:10.1209/0295-5075/84/67015 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/215360 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Electron-hole Asymmetry and Quantum Critical Point in Hole-doped BaFe$_2$As$_2$ | |
| dc.type | text |