中国物理B ›› 2017, Vol. 26 ›› Issue (1): 17201-017201.doi: 10.1088/1674-1056/26/1/017201

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

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

Ji-Wen Yin(尹辑文), Wei-Ping Li(李伟萍), Hong-Juan Li(李红娟), Yi-Fu Yu(于毅夫)   

  1. 1. Department of Physics and Electronic Informational Engineering, Chifeng University, Chifeng 024000, China;
    2. Department of Basic Courses, Tianjin Sino-German University of Applied Sciences, Tianjin 300350, China
  • 收稿日期:2016-09-18 修回日期:2016-10-12 出版日期:2017-01-05 发布日期:2017-01-05
  • 通讯作者: Ji-Wen Yin E-mail:ji-wenyin@163.com
  • 基金资助:

    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).

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

Ji-Wen Yin(尹辑文)1, Wei-Ping Li(李伟萍)2, Hong-Juan Li(李红娟)1, Yi-Fu Yu(于毅夫)1   

  1. 1. Department of Physics and Electronic Informational Engineering, Chifeng University, Chifeng 024000, China;
    2. Department of Basic Courses, Tianjin Sino-German University of Applied Sciences, Tianjin 300350, China
  • Received:2016-09-18 Revised:2016-10-12 Online:2017-01-05 Published:2017-01-05
  • Contact: Ji-Wen Yin E-mail:ji-wenyin@163.com
  • Supported by:

    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).

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摘要：

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.

关键词: spin relaxation, spin-phonon coupling, quantum dot

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.

Key words: spin relaxation, spin-phonon coupling, quantum dot

中图分类号:  (Quantum dots)

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