期刊论文详细信息
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