Spin transmission through quantum dots with strong spin-orbit interaction

被引：11
|
作者：
Chang, CH [1 ]
Mal'shukov, AG
Chao, KA
机构：
[1] Natl Ctr Theoret Sci, Div Phys, Hsinchu 300, Taiwan
[2] Lund Univ, Dept Phys, Div Solid State Theory, S-22362 Lund, Sweden
[3] Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
来源：
PHYSICS LETTERS A | 2004年 / 326卷 / 5-6期
基金：
俄罗斯基础研究基金会;
关键词：
spin current transport; spin geometric phase; Rashba interaction; regular and chaotic quantum dots; semi-classical path integral;
D O I：
10.1016/j.physleta.2004.04.048
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Quantum oscillations of the spin conductance through regular and chaotic 2D quantum dots under the varying Rashba spin-orbit interaction and at zero magnetic field have been investigated numerically by summing up the spin evolution matrices for classical transmitting trajectories. The Fourier analysis of these oscillations indicates a strong geometry dependence of the power spectra. The spectra for narrow rings are dominated by a single peak as previous analytic result, for regular quantum dots are represented by multiple peaks, and for chaotic quantum dots by quasi-continuum peaks. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：436 / 441
页数：6
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