Spin-dependent magnetotransport through a ring due to spin-orbit interaction -: art. no. 155335

被引：203
|
作者：
Molnár, B
Peeters, FM
Vasilopoulos, P
机构：
[1] Univ Antwerp, Dept Nat Kunde, B-2610 Antwerp, Belgium
[2] Concordia Univ, Dept Phys, Montreal, PQ H3G 1M8, Canada
来源：
PHYSICAL REVIEW B | 2004年 / 69卷 / 15期
关键词：
D O I：
10.1103/PhysRevB.69.155335
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electron transport through a one-dimensional ring connected with two external leads, in the presence of spin-orbit interaction (SOI) of strength alpha and a perpendicular magnetic field is studied. Applying Griffith's boundary conditions we derive analytic expressions for the reflection and transmission coefficients of the corresponding one-electron scattering problem. We generalize earlier conductance results by Nitta [Appl. Phys. Lett. 75, 695 (1999)] and investigate the influence of alpha, temperature, and a weak magnetic field on the conductance. Varying alpha and temperature changes the position of the minima and maxima of the magnetic-field dependent conductance, and it may even convert a maximum into a minimum and vice versa.
引用
收藏
页码：155335 / 1
页数：11
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