TY - JOUR
T1 - Imaging bond order near nonmagnetic impurities in square-lattice antiferromagnets
AU - Kaul, Ribhu K.
AU - Melko, Roger G.
AU - Metlitski, Max A.
AU - Sachdev, Subir
PY - 2008/10/31
Y1 - 2008/10/31
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.101.187206
DO - 10.1103/PhysRevLett.101.187206
M3 - Article
AN - SCOPUS:55849117346
SN - 0031-9007
VL - 101
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 187206
ER -