dc.contributor.author | Xu, Cenke | |
dc.contributor.author | Mueller, Markus | |
dc.contributor.author | Sachdev, Subir | |
dc.date.accessioned | 2012-01-09T18:30:41Z | |
dc.date.issued | 2008 | |
dc.identifier.citation | Xu, Cenke, Markus Mueller, and Subir Sachdev. 2008. Ising and spin orders in iron-based superconductors. Physical Review B 78(2): 020501. | en_US |
dc.identifier.issn | 1098-0121 | en_US |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:7349761 | |
dc.description.abstract | Motivated by recent neutron scattering experiments, we study the ordering of spins in the iron-based superconductors La(O\(_{1-x}\)F\(_x\))FeAs, assuming them in proximity to a Mott insulator in the phase diagram. The ground state of the parent system with x = 0 is a spin density wave with ordering wave vector \(\vec{Q}\) = (0, \(\pi\)) or (\(\pi\), 0). Upon raising the temperature, we find the system to restore SU(2) symmetry, while an Ising symmetry remains broken, explaining the experimentally observed lattice distortion to a monoclinic crystal structure. Upon further temperature increase, the spins finally disorder at a second transition. The phase transition driven by doping with charge carriers similarly splits into an O(3) transition, and an Ising transition with z = 3 at larger doping. | en_US |
dc.description.sponsorship | Physics | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.isversionof | doi:10.1103/PhysRevB.78.020501 | en_US |
dc.relation.hasversion | http://arxiv.org/abs/0804.4293v4 | en_US |
dash.license | OAP | |
dc.title | Ising and Spin orders in Iron-Based Superconductors | en_US |
dc.type | Journal Article | en_US |
dc.description.version | Author's Original | en_US |
dc.relation.journal | Physical Review B | en_US |
dash.depositing.author | Sachdev, Subir | |
dc.date.available | 2012-01-09T18:30:41Z | |
dc.identifier.doi | 10.1103/PhysRevB.78.020501 | * |
dash.contributor.affiliated | Sachdev, Subir | |