Tunable spin spatial splitter based on a δ-doped realistic magnetic-barrier nanostructure

被引：17
作者：
Lu, Mao-Wang [1 ]
Cao, Xue-Li [1 ]
Huang, Xin-Hong [1 ]
Jiang, Ya-Qing [1 ]
Li, Shuai [1 ]
Yang, Shi-Peng [1 ]
机构：
[1] Guilin Univ Technol, Coll Sci, Guilin 541004, Peoples R China
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2015年 / 77卷
关键词：
Magnetic nanostructure; delta-Doping; Lateral displacement; Spin polarization; Spin spatial splitter; 2-DIMENSIONAL ELECTRON-GAS; BEAM SPLITTER; SPINTRONICS; SHIFTS; STATES;
D O I：
10.1016/j.spmi.2014.11.019
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We theoretically investigate a tunable delta-potential effect on a spin spatial splitter, which can be realized experimentally by depositing a ferromagnetic stripe with a vertical magnetization on top of semiconductor heterostructure and using atomic-layer doping technique. With the help of stationary phase method, the delta-doping dependent spin-polarized lateral displacement is numerically calculated by means of the improved transfer-matrix technique. Both amplitude and sign of the spin polarized lateral displacement are found to vary dramatically with the weight and/or location of the delta-doping. Thus, a structurally tunable spin spatial splitter can be achieved for spintronic applications. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：232 / 239
页数：8
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