Numerical study of geometrical frustration. From square to triangular lattices

被引：1
|
作者：
Hu, Feiming [1 ,2 ]
Ma, Tianxing [1 ,2 ,3 ]
Lin, Hai-Qing [1 ,2 ,4 ]
机构：
[1] Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Inst Theoret Phys, Hong Kong, Hong Kong, Peoples R China
[3] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
[4] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China
来源：
COMPUTER PHYSICS COMMUNICATIONS | 2011年 / 182卷 / 01期
关键词：
Geometrical frustration; Anti-ferromagnetic; Ferromagnetic; 2-DIMENSIONAL HUBBARD-MODEL; NEAREST-NEIGHBOR; NEEL ORDER; FERROMAGNETISM; SUPERCONDUCTIVITY; TRANSITION;
D O I：
10.1016/j.cpc.2010.08.012
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In this work we study the effects of geometrical frustration in square lattice which can be measured by the diagonal hopping integral In the framework of the Hubbard model we use quantum Monte Carlo method to calculate spin susceptibility and focus on magnetic fluctuations in this system We find that in two filling regions the effects of geometrical frustration are quite different As a measure of geometrical frustration between square and triangular lattices the diagonal hopping suppresses the anti-ferromagnetic fluctuation at half filling and enhances ferromagnetic fluctuation at 1 5 filling (C) 2010 Elsevier BV All rights reserved
引用
收藏
页码：74 / 76
页数：3
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