Spin-liquid phase of the multiple-spin exchange Hamiltonian on the triangular lattice

Article

关键词: RESONATING-VALENCE-BOND;    QUANTUM HEISENBERG-ANTIFERROMAGNET;    2-DIMENSIONAL SOLID HE-3;    GROUND-STATES;    KAGOME LATTICE;    HALL STATES;    EXCITATIONS;    DEGENERACY;    MODELS;    GAP;   

DOI  :  10.1103/PhysRevB.60.1064

来源: SCIE

【 摘 要 】

We performed an exact diagonalization study of the spin-liquid phase of the multiple-spin exchange model on a triangular lattice. It is characterized by no Neel long-range order, short-ranged magnetic correlations, and a spin gap. We found no long-range order in any local order parameter we investigated (chiral, dimer, etc.) The probable asymptotic ground-state degeneracy is discussed. We argue that it could be of topological origin and that the system is probably not a chiral spin liquid. A possible relation to the Affleck-Kennedy-Lieb-Tasaki, or valence-bond solid phase is discussed. [S0163-1829(99)15125-7].

【 授权许可】

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