RESONATING-VALENCE-BOND WAVE-FUNCTION FOR THE 2-DIMENSIONAL HEISENBERG-MODEL ON A TRIANGULAR LATTICE

被引：37
|
作者：
LEE, TK [1 ]
FENG, S [1 ]
机构：
[1] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204
来源：
PHYSICAL REVIEW B | 1990年 / 41卷 / 16期
关键词：
D O I：
10.1103/PhysRevB.41.11110
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A resonating-valence-bond (RVB) wave function for the triangular lattice is constructed by following the renormalized Hamiltonian approach (or Gutzwiller approximation) successfully developed for the square lattice. This wave function is then used to calculate the ground-state energy by using the variational Monte Carlo method. Comparison with results of other trial wave functions is discussed. Energy of this paramagnetic RVB state is not as low as other antiferromagnetically ordered wave functions. A flux-phase state similar to the RVB state is also presented. This state with one-quarter flux quantum per plaquette breaks time-reversal symmetry. © 1990 The American Physical Society.
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收藏
页码：11110 / 11113
页数：4
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