Spin-dependent transmission of holes through a semiconductor quantum wire with multiple stub

被引：1
作者：
Vali, R. [1 ]
Sadrollahi, E. [1 ]
机构：
[1] Damghan Univ Basic Sci, Sch Phys, Damghan, Iran
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 10期
关键词：
spin transport; quantum wire; multiple stub;
D O I：
10.1016/j.physe.2008.05.005
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The spin transport of holes through a quantum wire made of many identical T-shaped diluted magnetic semiconductor/semiconductor units is investigated theoretically. The spin-down and spin-up transmission coefficients have been studied as a function of stub parameters. The spin-up transmission coefficient as a function of the stub length is extremely negligible, in the case of multiple-stub quantum wire, while the spin-down transmission coefficient shows a nearly periodic behaviour with regions of large transmission separated by forbidden bands. The spin polarization switches periodically between one and zero as the stub length is changed and shows a square-wave pattern. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：3155 / 3159
页数：5
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