The conductance of the asymmetric Aharonov-Bohm ring with a delta-potential barrier in the presence of Rashba spin-orbit interaction

被引：3
作者：
Baltateanu, D. M. [1 ]
机构：
[1] W Univ Timisoara, Fac Phys, RO-300223 Timisoara, Romania
来源：
PHYSICS LETTERS A | 2011年 / 375卷 / 32期
关键词：
Aharonov-Bohm ring; Spin-orbit interaction; Ballistic transport; QUANTUM; OSCILLATIONS; PHASE;
D O I：
10.1016/j.physleta.2011.06.033
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
This Letter deals with the effect of a delta-potential barrier on the one-dimensional and asymmetric Aharonov-Bohm ring with Rashba spin-orbit interaction. The analytic expressions of the transmission amplitude and conductance are derived by applying the transfer matrix method in the one-electron scattering formalism. Resorting to an adequate tuning of the Aharonov-Bohm magnetic flux and Rashba coupling strength, a control of the conductance can be done by varying the strength and the location of the barrier. This may be useful in the design of further mesoscopic spin filters by using suitable asymmetry configurations. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：2952 / 2957
页数：6
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