科研之友
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摘要
We propose a variant of the antiferromagnetic XY model which includes a biquadratic (J(2)) as well as the quadratic (J(1)) interaction on the triangular lattice. The phase diagram for large J(2)/J(1) exhibits a phase with coexisting quasi-long-range nematic, and long-ranged vector spin chirality orders in the absence of magnetic order, which qualifies our model as the first instance of a classical spin model that exhibits a vector chiral spin liquid phase. The interplay of nematic and spin chirality orders is discussed. A variety of critical properties are derived by means of Monte Carlo simulation.
- 出版日期2008-10-17
