Resonant magnetic fields of a magnetopolaron bound to a Coulomb impurity in a GaAs/Ga1xAlxAs quantum well

Bao-Hua Wei, Youyan Liu, and Shi-Wei Gu
Phys. Rev. B 44, 5703 – Published 15 September 1991
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Abstract

It is shown that the resonant magnetic field BC* of a magnetopolaron bound to a Coulomb impurity in a GaAs/Ga1xAlxAs quantum well is lower than that of the ‘‘free’’ polaron owing to the effect of the Coulomb potential. Using the MacDonald method to treat the Coulomb potential, we come to the conclusion that BC* is related to the width of the quantum well, and that the resonant frequency is really below the frequency of LO phonons but is not ‘‘pinning’’ at a frequency near that of TO phonons.

  • Received 29 January 1991

DOI:https://doi.org/10.1103/PhysRevB.44.5703

©1991 American Physical Society

Authors & Affiliations

Bao-Hua Wei

  • Department of Applied Physics, South China University of Technology, Guangzhou 510641, People’s Republic of China
  • Chinese Center for Advanced Science and Technology (World Laboratory), Beijing 100080, People’s Republic of China
  • International Center for Materials Physics, Academia Sinica, Shenyang 110015, People’s Republic of China

Youyan Liu

  • Chinese Center for Advanced Science and Technology (World Laboratory), Beijing 100080, People’s Republic of China
  • Department of Applied Physics, South China University of Technology, Guangzhou 510641, People’s Republic of China
  • International Center for Materials Physics, Academia Sinica, Shenyang 110015, People’s Republic of China

Shi-Wei Gu

  • Chinese Center for Advanced Science and Technology (World Laboratory), Beijing 100080, People’s Republic of China
  • National Laboratory for Infrared Physics, Academia Sinica, Shanghai, 200083, People’s Republic of China
  • International Center for Material Physics, Academia Sinica, Shenyang 110015, People’s Republic of China
  • Department of Applied Physics, Shanghai Jiao Tong University, Shanghai 200030, People’s Republic of China

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Issue

Vol. 44, Iss. 11 — 15 September 1991

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