Spinless fermions versus spin waves in describing antiferromagnetic Heisenberg ladders

被引：0
|
作者：
Hori, H [1 ]
Yamamoto, S [1 ]
机构：
[1] Hokkaido Univ, Div Phys, Sapporo, Hokkaido 0600810, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷
关键词：
Heisenberg ladder; spinless fermion; spin wave; nuclear spin relaxation;
D O I：
10.1016/j.jmmm.2003.12.1239
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate magnetic properties of the spin-1/2 two-leg Heisenberg ladder antiferromagnet developing two formulations, one of which starts from the Jordan-Wigner transformation along an elaborately ordered path, and the other of which modifies the conventional spin-wave theory so as to restore the sublattice symmetry. The static and dynamic quantities are calculated and a novel field dependence of the nuclear spin-lattice relaxation rate, which is peculiar to one-dimensional spin-gapped antiferromagnets, is pointed out in particular. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：269 / 270
页数：2
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