Structure and relevant dimension of the Heisenberg model and applications to spin rings

被引：31
|
作者：
Bärwinkel, K [1 ]
Schmidt, HJ [1 ]
Schnack, J [1 ]
机构：
[1] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2000年 / 212卷 / 1-2期
关键词：
Heisenberg model; spin ring; magnon stares; diagonalization; relevant dimension;
D O I：
10.1016/S0304-8853(99)00579-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
For the diagonalization of the Hamilton matrix in the Heisenberg model relevant dimensions are determined depending on the applicable symmetries. Results an presented, birth, by general formulae in closed Form and by the respective numbers for a variety of special systems. In the case of cyclic symmetry, diagonalizations for Heisenberg spin rings are performed with the use of so-called magnon states. Analytically solvable cases of small spin rings are singled out and evaluated. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：240 / 250
页数：11
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