Imaging Bond Order Near Nonmagnetic Impurities in Square-Lattice Antiferromagnets
Kaul, Ribhu K.
Melko, Roger G.
Metlitski, Max A.
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CitationKaul, Ribhu K., Roger G. Melko, Max A. Metlitski, and Subir Sachdev. 2008. Imaging bond order near nonmagnetic impurities in square-lattice antiferromagnets. Physical Review Letters 101(18): 187206.
AbstractWe study the textures of generalized “charge densities” (scalar objects invariant under time reversal), in the vicinity of nonmagnetic impurities in square-lattice quantum antiferromagnets, by order parameter field theories. Our central finding is the structure of the vortex in the generalized density wave order parameter centered at the nonmagnetic impurity. Using exact numerical data from quantum Monte Carlo simulations on an antiferromagnetic spin model, we are able to verify the results of our field theoretic study. We extend our phenomenological approach to the period-4 bond-centered density wave found in the underdoped cuprates.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:7801339
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