Manipulating spin polarization via spin-orbit coupling in a magnetic microstructure constructed on surface of semiconductor heterostructure

被引：27

作者：

Lu, Ke-Yu ^{[1
,2
]}

Lu, Mao-Wang ^{[1
,3
]}

Chen, Sai-Yan ^{[1
]}

Cao, Xue-Li ^{[1
]}

Huang, Xin-Hong ^{[1
]}

机构：

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

[2] Guangxi Univ, Coll Elect Engn, Nanning 530004, Peoples R China

[3] Cent South Univ, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2019年 / 491卷

基金：

中国国家自然科学基金;

关键词：

Magnetic microstructure; Spin-orbit coupling; Spin polarization; Controllable spin filter; 2-DIMENSIONAL ELECTRON-GAS; TRANSPORT; BARRIER;

D O I：

10.1016/j.jmmm.2019.165491

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A controllable spin filter is proposed by theoretically investigating spin polarization in a magnetic microstructure constructed on surface of GaAs/AlxGa1-xAs heterostructure by patterning a horizontally-magnetized ferromagnetic stripe. Due to a broken intrinsic symmetry by spin-orbit coupling, a spin polarization effect appears in the magnetic microstructure. Degree of spin polarization can be modified by changing strength of spin-orbit coupling, which may be helpful for design of controllable spin-polarized source.

引用

页数：6

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