Spin Liquid Phases in 2D Frustrated XY Model

Details Spin Liquid Phases in 2D Frustrated XY Model Spin Liquid Phases in 2D Frustrated XY Model

1997-07-07

arxiv.org/abs/cond-mat/9707074v1

Physics

Condensed Matter

Statistical Mechanics

16 pages, Latex, 4 figures. To be published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.56.10975

In this paper we consider the $J_1-J_2-J_3$ classical and quantum 2D XY model. Spin wave calculations show that a spin liquid phase still exists in the quantum case as for Heisenberg models. We formulate a semiclassical approach of these models based on spin wave action and use a variational method to study the role played by vortices. Liquid and crystal phases of vortex could emerge in this description. These phases seem to be directly correlated with the spin liquid one and to its crystalline interpretation.

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