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

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.

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Year of publication:	2009
Authors:	Pires, A.S.T. ; Gouvea, M.E.
Published in:	Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 388.2009, 1, p. 21-27
Publisher:	Elsevier
Subject:	Quantum-phase transition \| XY model \| Two-dimensional

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://www.econbiz.de/10010873923