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

被引：171
|
作者：
Misguich, G
Lhuillier, C
Bernu, B
Waldtmann, C
机构：
[1] Univ Paris 06, UMR 7600 CNRS, Phys Theor Liquides Lab, F-75252 Paris, France
[2] Leibniz Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany
来源：
PHYSICAL REVIEW B | 1999年 / 60卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.60.1064
中图分类号：
T [工业技术];
学科分类号：
08 ;
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].
引用
收藏
页码：1064 / 1074
页数：11
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