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

V Stavrou; I Tsoulos; Odysseas Kosmas

doi:10.1080/15421406.2020.1732561

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

V Stavrou
, I Tsoulos
, Odysseas Kosmas

Research output: Contribution to journal › Article › peer-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 language	English
Journal	Molecular Crystals and Liquid Crystals
Volume	701
Issue number	1
DOIs	https://doi.org/10.1080/15421406.2020.1732561
Publication status	Published - 1 Aug 2020

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10.1080/15421406.2020.1732561

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title = "Spin-flip relaxation mechanism in self-assembled quantum dots via phonon emission",

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{\textquoteright}s Golden Rule and its dependence on the shape of the QDs, the size and the lattice temperature is investigated.",

author = "V Stavrou and I Tsoulos and Odysseas Kosmas",

year = "2020",

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doi = "10.1080/15421406.2020.1732561",

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AU - Stavrou, V

AU - Tsoulos, I

AU - Kosmas, Odysseas

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N2 - 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.

AB - 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.

U2 - 10.1080/15421406.2020.1732561

DO - 10.1080/15421406.2020.1732561

M3 - Article

SN - 1542-1406

VL - 701

JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

IS - 1

ER -

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

Abstract

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