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dc.contributor.authorMetlitski, Max A.
dc.contributor.authorSachdev, Subir
dc.date.accessioned2019-09-27T13:15:00Z
dc.date.issued2007
dc.identifier.citationMetlitski, Max A., and Subir Sachdev. 2007. “Impurity Spin Textures across Conventional and Deconfined Quantum Critical Points of Two-Dimensional Antiferromagnets.” Physical Review B 76 (6). https://doi.org/10.1103/physrevb.76.064423.
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41417247*
dc.description.abstractWe describe the spin distribution in the vicinity of a nonmagnetic impurity in a two-dimensional antiferromagnet undergoing a transition from a magnetically ordered Neel state to a paramagnet with a spin gap. The quantum critical ground state in a finite system has total spin S=1/2 (if the system without the impurity had an even number of S=1/2 spins), and recent numerical studies in a double layer antiferromagnet [K. H. Hoglund , Phys. Rev. Lett. 98, 087203 (2007)] have shown that the spin has a universal spatial form delocalized across the entire sample. We present the field theory describing the uniform and staggered magnetizations in this spin texture for two classes of antiferromagnets: (i) the transition from a Neel state to a paramagnet with local spin singlets, in models with an even number of S=1/2 spins per unit cell, which are described by a O(3) Landau-Ginzburg-Wilson field theory; and (ii) the transition from a Neel state to a valence bond solid, in antiferromagnets with a single S=1/2 spin per unit cell, which are described by a "deconfined" field theory of spinons.
dc.language.isoen_US
dc.publisherAmerican Physical Society
dash.licenseLAA
dc.titleImpurity spin textures across conventional and deconfined quantum critical points of two-dimensional antiferromagnets
dc.typeJournal Article
dc.description.versionAccepted Manuscript
dc.relation.journalPhysical Review B - Condensed Matter and Materials Physics
dash.depositing.authorSachdev, Subir::01f180804aa3dee76221c3e9d66397f5::600
dc.date.available2019-09-27T13:15:00Z
dash.workflow.comments1Science Serial ID 76448
dc.identifier.doi10.1103/PhysRevB.76.064423
dash.source.volume76;6


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