Exciton unbinding in a confined fermi sea

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13 Citations (Scopus)

Abstract

An exciton is predicted to unbind abruptly in a fermion gas which exceeds a critical density. The transition should be observable in terms of a sudden red shift of a few meV in the photoluminescence of high-mobility n-type modulation-doped GaAs/AlxGa1-xAs quantum wells at electron densities of about 1011cm-2. Slightly above the critical density, the application of a magnetic field causes a reentrant exciton binding/unbinding phenomenon.

Original languageEnglish
Pages (from-to)163-166
Number of pages4
JournalSolid State Communications
Volume78
Issue number2
DOIs
Publication statusPublished - 1991 Apr
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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