Tunable Wave-Vector Filtering Effect for Electrons in a Magnetically and Electrically Confined Semiconductor Heterostructure with a δ-Doping

被引：11

作者：

Huang, Meng-Rou ^{[1
]}

Lu, Mao-Wang ^{[1
]}

Huang, Xin-Hong ^{[1
]}

Liang, Dong-Hui ^{[1
]}

Cao, Zeng-Lin ^{[1
]}

机构：

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

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2020年 / 33卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Magnetically and electrically confined semiconductor heterostructure; The delta-doping; Wave-vector filtering effect; Wave-vector filtering efficiency; Tunable momentum filter; SPIN SPATIAL SPLITTER; GIANT MAGNETORESISTANCE; HYBRID FERROMAGNET; NANOSTRUCTURE; POLARIZATION;

D O I：

10.1007/s10948-019-05330-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We theoretically investigate how to manipulate the wave-vector filtering effect by delta-doping for electrons in a magnetically and electrically confined semiconductor heterostructure, which can be constructed by patterning a ferromagnetic stripe and a Schottky-metal stripe in a parallel configuration on the surface of the GaAs/AlxGa1-xAs heterostructure. The delta-doping dependent transmission is calculated by exactly solving the Schrodinger equation with the help of an improved transfer matrix method. An appreciable wave-vector filtering effect is revealed. Its wave-vector filtering efficiency is found to be tunable by changing the weight or position of the delta-doping. Thus, a structurally controllable momentum filter can be obtained for nanoelectronics device applications.

引用

页码：307 / 312

页数：6

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