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Exciton–LO-phonon interaction in zinc-compound quantum wells

Ruisheng Zheng

Mitsuru Matsuura

Tsunemasa Taguchi

  • Department of Electrical and Electronic Engineering, Faculty of Engineering, Yamaguchi University, Ube, 755-8611, Japan

  • Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Ube, 755-8611, Japan

  • Department of Electrical and Electronic Engineering, Faculty of Engineering, Yamaguchi University, Ube, 755-8611, Japan

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Phys. Rev. B 61, 9960 – Published 15 April, 2000

DOI: https://doi.org/10.1103/PhysRevB.61.9960

Abstract

The properties of optical phonons and excitons in four zinc-compound quantum wells, in which the well layers are made of ternary mixed crystals, are investigated theoretically. The optical phonon frequencies and the electron–LO-phonon coupling constants of the well materials are calculated by using a mixed crystal theory. The interface optical phonon energies and dispersion relations, the exciton binding energies and the exciton–LO-phonon interaction energies are calculated as functions of the well width and the concentration x. The effects of the mixed crystal on the exciton–optical-phonon interaction in the quantum wells are discussed.

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Outline

Information

Phys. Rev. B 61, 9960– Published 15 April, 2000
  • Received 13 August 1999

© 2000 American Physical Society

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