Renormalization effects in the dense electron-hole magnetoplasma of a strained InxGa1xAs/GaAs single quantum well after picosecond excitation

A. F. Dite, V. D. Kulakovskii, F. Faller, and A. Forchel
Phys. Rev. B 50, 15063 – Published 15 November 1994

Abstract

The renormalization of the Landau-level transition energies in the dense quasi-two-dimensional magnetoplasma has been determined from time-resolved luminescence spectra in a strained undoped In0.17Ga0.83As/GaAs quantum well. The neutral electron-hole magnetoplasma was created by 1-ps laser pulses in magnetic fields H≤7.5 T. The renormalization has been found to depend strongly not only on the carrier density but also on their distribution over Landau levels. The dependence is explained by the interplay of the attractive exchange and repulsive Pauli contributions in the transition energies and Coulomb interaction screening effect.

  • Received 4 April 1994

DOI:https://doi.org/10.1103/PhysRevB.50.15063

©1994 American Physical Society

Authors & Affiliations

A. F. Dite and V. D. Kulakovskii

  • Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow District, 142432, Russia

F. Faller and A. Forchel

  • Würzburg University, 97074 Würzburg, Federal Republic of Germany

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Vol. 50, Iss. 20 — 15 November 1994

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