Imaging bond order near nonmagnetic impurities in square-lattice antiferromagnets

Ribhu K. Kaul, Roger G. Melko, Max A. Metlitski, Subir Sachdev

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

We 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.

Original languageEnglish (US)
Article number187206
JournalPhysical review letters
Volume101
Issue number18
DOIs
StatePublished - Oct 31 2008

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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