Anderson impurity model: Double occupancy contribution to the magnetic susceptibility

被引：0

作者：

Jaroszewicz, S. ^{[1
]}

Roura-Bas, P. ^{[1
]}

机构：

[1] Comis Nacl Energia Atom, Ctr Atom Constituyentes, Dpto Fis, RA-1429 Buenos Aires, DF, Argentina

来源：

PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 18期

关键词：

Magnetic susceptibility; Anderson model; Non-crossing approximation; SPECTRAL PROPERTIES;

D O I：

10.1016/j.physb.2009.06.105

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

After solving the single Anderson impurity model (SIAM) within the non-crossing approximation with a finite Coulomb repulsion, U, and vertex corrections (NCAf(2)v), we focus on the magnetic susceptibility. Using the same diagrammatic expansion the susceptibility can be dressed with two factors, namely, the double state occupancy and the vertex corrections. In this work we analyse the effect of double occupancy on the dynamic and static susceptibility as a function of U and on the degeneracy of the total impurity angular moment, S. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2865 / 2867

页数：3

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