COMPLETE SOLUTION OF THE XXZ MODEL ON FINITE RINGS - FINITE-TEMPERATURE STRUCTURE FACTORS

被引：3
作者：
FABRICIUS, K
LOW, U
MUTTER, KH
机构：
[1] Physics Department, University of Wuppertal
来源：
PHYSICAL REVIEW B | 1995年 / 51卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.51.8270
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The transverse and longitudinal structure factors of the spin-1/2 XXZ model are determined from a complete diagonalization of the Hamiltonian on rings with N=4,...,16 sites. At fixed critical momentum p=π, we observe the critical low-temperature behavior as it is predicted by scaling arguments. Finite-size scaling works well for the transverse structure factors. However, it breaks down for the longitudinal structure factors if the anisotropy is too large (γ>0.3π). We also investigate the low-temperature behavior of the uniform susceptibility. © 1995 The American Physical Society.
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页码：8270 / 8275
页数：6
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