Controllable electron-momentum filter in a δ-doped magnetically modulated semiconductor nanostructure

被引：10

作者：

Chen, Sai-Yan ^{[1
]}

Cao, Xue-Li ^{[1
]}

Huang, Meng-Rou ^{[1
]}

Liang, Dong-Hui ^{[1
]}

机构：

[1] Guilin Univ Technol, Coll Sci, Guilin 541004, Peoples R China

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2019年 / 99卷 / 08期

关键词：

Magnetically modulated semiconductor nanostructure; GaAs/AlxGa1-xAs heterostructure; delta-doping; wave-vector filtering (WVF); controllable electron-momentum filter; SPIN SPATIAL SPLITTER; GAS; MAGNETORESISTANCE; TRANSPORT;

D O I：

10.1080/09500839.2019.1670881

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have theoretically investigated the control of wave-vector filtering (WVF) by introducing delta-doping into a magnetically modulated nanostructure fabricated by depositing ferromagnetic stripes on top and bottom of a GaAs/AlxGa1-xAs heterostructure. With the help of an improved transfer matrix method, the Schrodinger equation for electrons in this semiconductor nanostructure is solved exactly and the transmission efficient calculated numerically. We demonstrate that the WVF efficiency is associated closely with the weight and position of the delta-doping, which may be helpful for designing a controllable electron-momentum filter based on such a magnetically modulated semiconductor nanostructure.

引用

页码：292 / 301

页数：10

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