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

V Stavrou, I Tsoulos, Odysseas Kosmas

Research output: Contribution to journalArticlepeer-review

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.
Original languageEnglish
JournalMolecular Crystals and Liquid Crystals
Volume701
Issue number1
DOIs
Publication statusPublished - 1 Aug 2020

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