MAGNETIC-FIELD-INDUCED 1ST-ORDER TRANSITION IN THE FRUSTRATED XY MODEL ON A STACKED TRIANGULAR LATTICE

Article

关键词: 3-STATE POTTS-MODEL;    MONTE-CARLO;    PHASE-TRANSITION;    2 DIMENSIONS;    RENORMALIZATION-GROUP;    CHIRAL CRITICALITY;    ORDER-PARAMETER;    ANTIFERROMAGNETS;    DIAGRAMS;    SYSTEM;   

DOI  :  10.1103/PhysRevB.48.3840

来源: SCIE

【 摘 要 】

The results of extensive Monte Carlo simulations of magnetic-field-induced transitions in the XY model on a stacked triangular lattice with antiferromagnetic intraplane and ferromagnetic interplane interactions are discussed. A low-field transition from the paramagnetic to a three-state (Potts) phase is found to be very weakly first order with behavior suggesting tricriticality at zero field. In addition to clarifying some long-standing ambiguity concerning the nature of this Potts-like transition, the present work also serves to further our understanding of the critical behavior at T(N), about which there has been much controversy.

【 授权许可】

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