1. Spin-flip relaxation mechanism in self-assembled quantum dots via phonon emission.
- Author
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Stavrou, V. N., Tsoulos, I. G., and Kosmas, O. T.
- Subjects
- *
QUANTUM dots , *ELECTRON relaxation time , *ACOUSTIC phonons , *ACOUSTIC emission , *PHONONS , *POLARONS - Abstract
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. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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