Application of split-gate structures as tunable spin filters

被引：82

作者：

Gilbert, MJ ^{[1
]}

Bird, JP

机构：

[1] Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA

[2] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 07期

关键词：

D O I：

10.1063/1.1288816

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We describe an electron filter that exploits the known magnetotransport properties of quantum point contacts to provide local and tunable control of the spin polarization in a semiconductor. When properly configured, we show that the conductance of this device gives a direct measure of the spin polarization of carriers transmitted through it. By modeling the transport through a potential barrier with experimentally realistic parameters, we discuss the factors which must be satisfied in order to successfully implement such a device. (C) 2000 American Institute of Physics. [S0003-6951(00)02333-0].

引用

页码：1050 / 1052

页数：3

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