Quantum phase transition in the two-dimensional XY model with single-ion anisotropy

A.S.T. Pires and M.E. Gouvea

Physica A: Statistical Mechanics and its Applications, 2009, vol. 388, issue 1, 21-27

Abstract: In this paper we study the quantum phase transition and low temperature behavior in a square lattice quantum two-dimensional XY model with single-ion anisotropy and spin S=1. Starting with the Villain representation, a Landau–Ginzburg expression is written. The large D phase is studied using the bond operator formalism.

Keywords: Quantum-phase transition; XY model; Two-dimensional (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:388:y:2009:i:1:p:21-27

DOI: 10.1016/j.physa.2008.09.030

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