Direct spin-phonon coupling of spin-flip relaxation in quantum dots

doi:10.1088/1674-1056/26/1/017201

Abstract

Within the frame of the Pavlov-Firsov spin-phonon coupling model, we study the spin-flip assisted by the acoustical phonon scattering between the first-excited state and the ground state in quantum dots. We analyze the behaviors of the spin relaxation rates as a function of an external magnetic field and lateral radius of quantum dot. The different trends of the relaxation rates depending on the magnetic field and lateral radius are obtained, which may serve as a channel to distinguish the relaxation processes and thus control the spin state effectively.

Keywords: spin relaxation spin-phonon coupling quantum dot

Received: 18 September 2016
Revised: 12 October 2016
Accepted manuscript online:

PACS:	73.21.La	(Quantum dots)
	72.10.Di	(Scattering by phonons, magnons, and other nonlocalized excitations)
	72.25.Rb	(Spin relaxation and scattering)

Fund:

Project supported by the National Natural Science Foundation of China (Grant No. 11264001) and the Natural Science Foundation of Inner Mongolia, China (Grant No. 2012MS0116).

Corresponding Authors: Ji-Wen Yin
E-mail: ji-wenyin@163.com

Cite this article:

Ji-Wen Yin(尹辑文), Wei-Ping Li(李伟萍), Hong-Juan Li(李红娟), Yi-Fu Yu(于毅夫) Direct spin-phonon coupling of spin-flip relaxation in quantum dots 2017 Chin. Phys. B 26 017201

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