Valence Bond Solid Order Near Impurities in Two-Dimensional Quantum Antiferromagnets

DSpace/Manakin Repository

Valence Bond Solid Order Near Impurities in Two-Dimensional Quantum Antiferromagnets

Show simple item record

dc.contributor.author Metlitski, Max A.
dc.contributor.author Sachdev, Subir
dc.date.accessioned 2012-01-18T16:00:59Z
dc.date.issued 2008
dc.identifier.citation Metlitski, Max and Subir Sachdev. 2008. Valence bond solid order near impurities in two-dimensional quantum antiferromagnets. Physical Review B 77(5): 054411. en_US
dc.identifier.issn 1550-235X en_US
dc.identifier.issn 1098-0121 en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:7696991
dc.description.abstract Recent scanning tunneling microscopy (STM) experiments on underdoped cuprates have displayed modulations in the local electronic density of states, which are centered on a Cu-O-Cu bond [Kohsaka et al. Science 315 1380 (2007)]. As a paradigm of the pinning of such bond-centered ordering in strongly correlated systems, we present the theory of valence bond solid (VBS) correlations near a single impurity in a square lattice antiferromagnet. The antiferromagnet is assumed to be in the vicinity of a quantum transition from a magnetically ordered Néel state to a spin-gap state with long-range VBS order. We identify two distinct classes of impurities: (i) local modulation in the exchange constants and (ii) a missing or additional spin, for which the impurity perturbation is represented by an uncompensated Berry phase. The “boundary” critical theory for these classes is developed. In the second class, we find a VBS pinwheel around the impurity, accompanied by a suppression in the VBS susceptibility. Implications for numerical studies of quantum antiferromagnets and for STM experiments on the cuprates are noted. 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.77.054411 en_US
dc.relation.hasversion http://qpt.physics.harvard.edu/p166.pdf en_US
dc.relation.hasversion http://arxiv.org/abs/0710.0626v2 en_US
dash.license OAP
dc.subject strongly correlated electrons en_US
dc.subject superconductivity en_US
dc.title Valence Bond Solid Order Near Impurities in Two-Dimensional Quantum Antiferromagnets en_US
dc.type Journal Article en_US
dc.description.version Accepted Manuscript en_US
dc.relation.journal Physical Review B en_US
dash.depositing.author Sachdev, Subir
dc.date.available 2012-01-18T16:00:59Z

Files in this item

Files Size Format View
0710.0626v2.pdf 494.4Kb PDF View/Open

This item appears in the following Collection(s)

  • FAS Scholarly Articles [7220]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

Show simple item record

 
 

Search DASH


Advanced Search
 
 

Submitters