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dc.contributor.authorXu, Cenke
dc.contributor.authorMueller, Markus
dc.contributor.authorSachdev, Subir
dc.date.accessioned2012-01-09T18:30:41Z
dc.date.issued2008
dc.identifier.citationXu, 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.issn1098-0121en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:7349761
dc.description.abstractMotivated 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.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofdoi:10.1103/PhysRevB.78.020501en_US
dc.relation.hasversionhttp://arxiv.org/abs/0804.4293v4en_US
dash.licenseOAP
dc.titleIsing and Spin orders in Iron-Based Superconductorsen_US
dc.typeJournal Articleen_US
dc.description.versionAuthor's Originalen_US
dc.relation.journalPhysical Review Ben_US
dash.depositing.authorSachdev, Subir
dc.date.available2012-01-09T18:30:41Z
dc.identifier.doi10.1103/PhysRevB.78.020501*
dash.contributor.affiliatedSachdev, Subir


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