Conductance of two-dimensional waveguide in presence of the Rashba spin-orbit interaction

被引：1
|
作者：
Liu, Duan-Yang [1 ]
Xia, Jian-Bai [2 ]
机构：
[1] Beijing Univ Chem Technol, Coll Sci, Beijing 100029, Peoples R China
[2] Inst Semicond, State Key Lab Superlattice & Microstruct, Beijing 100083, Peoples R China
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2018年 / 98卷
基金：
中国国家自然科学基金;
关键词：
Rashba spin-orbit interaction; Quantum waveguide; Conductance quantization; Datta-Das spin field-effect transistor; Spin transport; STUB TUNERS; TRANSPORT; PRECESSION;
D O I：
10.1016/j.physe.2017.12.018
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
By using the transfer matrix method, we investigated spin transport in some straight structures in presence of the Rashba spin-orbit interaction. It is proved that the interference of two spin states is the same as that in one-dimensional Datta-Das spin field-effect transistor. The conductance of these structures has been calculated. Conductance quantization is common in these waveguides when we change the Fermi energy and the width of the waveguide. Using a periodic system of quadrate stubs and changing the Fermi energy, a nearly square-wave conductance can be obtained in some regions of the Fermi energy.
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页码：6 / 9
页数：4
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