Chiral spin liquid in two-dimensional XY helimagnets

Article

关键词: LONG-RANGE ORDER;    KOSTERLITZ-THOULESS TRANSITION;    CONTINUOUS SYMMETRY GROUP;    HALF-INTEGER CHARGES;    LATTICE COULOMB GAS;    PHASE-TRANSITIONS;    MONTE-CARLO;    CRITICAL-BEHAVIOR;    ISING-MODEL;    2 DIMENSIONS;   

DOI  :  10.1103/PhysRevB.85.174404

来源: SCIE

【 摘 要 】

We carry out MonteCarlo simulations to discuss critical properties of a classical two-dimensional XY frustrated helimagnet on a square lattice. We find two successive phase transitions upon the temperature decreasing: the first one is associated with breaking of a discrete Z(2) symmetry and the second one is of the Berezinskii-Kosterlitz-Thouless (BKT) type at which the SO(2) symmetry breaks. Thus, a narrow region exists on the phase diagram between lines of the Ising and the BKT transitions that corresponds to a chiral spin liquid.

【 授权许可】

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