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
收藏
页数：6
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