Spin-liquid phases in two-dimensional frustrated XY models

Article

关键词: QUANTUM HEISENBERG-ANTIFERROMAGNET;    SQUARE-LATTICE;    2 DIMENSIONS;    TRANSITION;    DISORDER;    DIAGRAM;    STATE;    BOND;   

DOI  :  10.1103/PhysRevB.56.10975

来源: SCIE

【 摘 要 】

In this paper we consider the J(1)-J(2)-J(3) classical and quantum two-dimensional XY model. Spin-wave cal culations 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 phase and to its crystalline interpretation. [S0163-1829(97)00838-2].

【 授权许可】

Free