Strong Correlations and Magnetic Frustration in the High Tc Iron Pnictides
| dc.creator | Si, Qimiao | |
| dc.creator | Abrahams, Elihu | |
| dc.date | 2008-04-16 | |
| dc.date | 2008-08-04 | |
| dc.date.accessioned | 2026-07-07T13:17:17Z | |
| dc.date.available | 2026-07-07T13:17:17Z | |
| dc.description | We consider the iron pnictides in terms of a proximity to a Mott insulator. The superexchange interactions contain competing nearest-neighbor and next-nearest-neighbor components. In the undoped parent compound, these frustrated interactions lead to a two-sublattice collinear antiferromagnet (each sublattice forming a Neel ordering), with a reduced magnitude for the ordered moment. Electron or hole doping, together with the frustration effect, suppresses the magnetic ordering and allows a superconducting state. The exchange interactions favor a d-wave superconducting order parameter; in the notation appropriate for the Fe square lattice, its orbital symmetry is $d_{xy}$. A number of existing and future experiments are discussed in light of the theoretical considerations. | |
| dc.description | (v2) 4+ pages, 4 figures, discussions on several points expanded; references added. To appear in Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/0804.2480 | |
| dc.identifier | http://arxiv.org/abs/0804.2480 | |
| dc.identifier | Phys. Rev. Lett. 101, 076401 (2008) | |
| dc.identifier | doi:10.1103/PhysRevLett.101.076401 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/231064 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Strong Correlations and Magnetic Frustration in the High Tc Iron Pnictides | |
| dc.type | text |