Dynamical incommensurability in the 2D Hubbard model

被引：2
|
作者：
Avella, A [1 ]
Mancini, F [1 ]
Villani, D [1 ]
机构：
[1] Univ Salerno, Unita INFM Salerno, Dipartimento Sci Fis ER Caianiello, I-84081 Baronissi, Salerno, Italy
来源：
PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷
关键词：
dynamical spin magnetic susceptibility; incommensurability; composite operator method;
D O I：
10.1016/S0921-4526(98)00867-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The recent discovery of incommensurate fluctuations in yttrium compounds has reopened the problem of finding new appropriate frameworks to describe the variety of experimental features presented by cuprate superconductors. According to this, the imaginary part of the dynamical spin magnetic susceptibility of the Hubbard model has been studied by means of the composite operator method. By varying the frequency, the crossover between the two antiferromagnetic regimes has been found. The incommensurability issue has been studied and discussed. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：732 / 733
页数：2
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