共 50 条
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
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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