Spin-relaxation anisotropy in a nanowire quantum dot with strong spin-orbit coupling

被引：4
|
作者：
Liu, Zhi-Hai [1 ]
Li, Rui [2 ]
机构：
[1] Beijing Computat Sci Res Ctr, Quantum Phys & Quantum Informat Div, Beijing 100193, Peoples R China
[2] Yanshan Univ, Sch Sci, Key Lab Microstruct Mat Phys Hebei Prov, Qinhuangdao 066004, Peoples R China
来源：
AIP ADVANCES | 2018年 / 8卷 / 07期
基金：
中国国家自然科学基金;
关键词：
FIELD;
D O I：
10.1063/1.5030970
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We study the impacts of the magnetic field direction on the spin-manipulation and the spin-relaxation in a one-dimensional quantum dot with strong spin-orbit coupling. The energy spectrum and the corresponding eigenfunctions in the quantum dot are obtained exactly. We find that no matter how large the spin-orbit coupling is, the electric-dipole spin transition rate as a function of the magnetic field direction always has a pi periodicity. However, the phonon-induced spin relaxation rate as a function of the magnetic field direction has a pi periodicity only in the weak spin-orbit coupling regime, and the periodicity is prolonged to 2 pi in the strong spin-orbit coupling regime. (c) 2018 Author(s).
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页数：9
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