Indirect exchange interaction between two local spins embedded in an Aharonov-Bohm Ring

被引：5
|
作者：
Utsumi, Y. [1 ]
Martinek, J.
Imamura, H.
Bruno, P.
Maekawa, S.
机构：
[1] RIKEN, Condensed Matter Theory Lab, Wako, Saitama 3510198, Japan
[2] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland
[3] AIST, Nanotechnol Res Inst, Tsukuba, Ibaraki 3058568, Japan
[4] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany
[5] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期
基金：
美国国家科学基金会;
关键词：
ruderman-kittel-kasuya-yosida interaction; aharonov-bohm effect; kondo correlations;
D O I：
10.1016/j.jmmm.2006.10.320
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We examine the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between two local spins embedded in an Aharonov-Bohm (AB) ring. The flux-dependent RKKY interaction dominates the transport properties for both ferromagnetic and antiferromagnetic coupling. For ferromagnetic coupling, the amplitude of AB oscillations is enhanced by Kondo correlations and for antiferromagnetic coupling the phase of AB oscillations is shifted by pi. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1142 / 1144
页数：3
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