Spin-flip relaxation mechanism in self-assembled quantum dots via phonon emission

被引：0
|
作者：
Stavrou, V. N. [1 ,2 ]
Tsoulos, I. G. [3 ]
Kosmas, O. T. [4 ]
机构：
[1] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA
[2] Hellen Naval Acad, Hadjikyriakio, Pireus, Greece
[3] Univ Ioannina, Dept Informat & Telecommun, Ioannina, Greece
[4] Univ Manchester, MACE, Modeling & Simulat Ctr, Manchester, Lancs, England
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2020年 / 701卷 / 01期
关键词：
Quantum Dots; Phonons; Spin-flip processes; Qubit;
D O I：
10.1080/15421406.2020.1732561
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The spin-flip relaxation time for electrons in self-assembled coupled quantum dots (SACQDs) due to emission of acoustic phonons is presented. We focus on arbitrary shaped quantum dots made with InAs embedded in a wetting layer InAs and surrounded by GaAs. The electron states are calculated using the 8-band strain dependent theory. The deformation potential and the piezo- electric acoustic phonon modes are employed to estimate the electron-phonon coupling. Spin-flip time is calculated by Fermi's Golden Rule and its dependence on the shape of the QDs, the size and the lattice temperature is investigated.
引用
收藏
页码：40 / 47
页数：8
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