Spin-dependent electron transport through a parallel double-quantum-dot structure

被引：4

作者：

Gong, Weijiang ^{[1
]}

Zheng, Yisong ^{[2
]}

机构：

[1] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China

[2] Jilin Univ, Dept Phys, Changchun 130023, Peoples R China

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2009年 / 41卷 / 04期

关键词：

Quantum dot; Electron transport; Rashba interaction; PROPOSAL;

D O I：

10.1016/j.physe.2008.10.007

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Electron transport properties in a parallel double-quantum-dot structure with three terminals are theoretically studied. By introducing a local Rashba spin-orbit coupling, we find that an incident electron from one terminal can select a specific terminal to depart from the quantum dots according to its spin state. As a result, spin polarization and spin separation can be simultaneously realized in this structure. And spin polarizations in different terminals can be inverted by tuning the structure parameters. The underlying quantum interference that gives rise to such a result is analyzed in the language of Feynman paths for the electron transmission. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.

引用

页码：574 / 580

页数：7

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