Frustration and quantum phase transitions in an anisotropic antiferromagnet on a square lattice

A.S.T. Pires

Physica A: Statistical Mechanics and its Applications, 2011, vol. 390, issue 15, 2787-2793

Abstract: We study the effect of frustration between nearest and next-nearest neighbors of the quantum S=1 anisotropic Heisenberg model on a square lattice using the bond operator technique. A single-site anisotropy term induces a quantum phase transition in the system. We calculate the effect of zero-temperature quantum fluctuations on the magnetization for the Néel and collinear antiferromagnetic phases.

Keywords: Quantum phase transitions; Frustration (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:390:y:2011:i:15:p:2787-2793

DOI: 10.1016/j.physa.2011.03.026

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