Condensation of Quasi-Two-Dimensional Biexcitons in a Single Heterojunction Quantum Well

Abstract

Excitons that coexist with a degenerate two-dimensional electron gas in the same quantum well subband have been observed in the photoluminescence from the recombination of electrons with localized photoexcited holes, At a critical electron density, an abrupt decrease in the exciton radiative recombination rate is observed, along with the formation of biexcitons. With increased excitation intensity, photoluminescence spectra are observed that verify theory on the radiative renormalization of biexcitons and strongly indicate the occurrence of a Bose-Einstein condensation of biexcitons.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1999
Accession Number
ADA362735

Entities

People

  • Patrick A. Folkes

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Bose Einstein Condensates
  • Condensation
  • Electron Density
  • Electron Gas
  • Electrons
  • Emission Spectra
  • Excitation
  • Excitons
  • Free Electrons
  • Frequency
  • Heterojunctions
  • Intensity
  • Military Research
  • Photoluminescence
  • Quantum Wells
  • Spectra
  • Two Dimensional

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Quantum Computing