Entanglement induced decoherence of Aharonov-Bohm oscillations in mesoscopic rings

被引：0
|
作者：
Joshi, SK
Sahoo, D
Jayannavar, AM
机构：
[1] Inst Phys, Bhubaneswar 751005, Orissa, India
[2] Indira Gandhi Ctr Atom Res, Div Mat Sci, Kalpakkam 603102, Tamil Nadu, India
来源：
SOLID STATE COMMUNICATIONS | 2001年 / 118卷 / 09期
关键词：
nanostructures; electronic transport; exchange and superexchange;
D O I：
10.1016/S0038-1098(01)00135-1
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study a simple model of decoherence of Aharonov-Bohm oscillations in the transmission across a metallic mesoscopic ring. In one arm of the ring, the electron interacts with a single magnetic impurity via an exchange coupling. The impurity can cause a spin-flip scattering leading to reduction of the amplitude of Aharonov-Bohm oscillations. Here decoherence occurs in spite of the absence of inelastic scattering. Its origin is traced to the interaction induced entanglement of quantum states. (C) 2001 Elsevier Science Ltd. All rights reserved.
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收藏
页码：469 / 472
页数：4
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