Exciton unbinding in a confined fermi sea

Gerrit E.W. Bauer

doi:10.1016/0038-1098(91)90275-Z

Exciton unbinding in a confined fermi sea

Gerrit E.W. Bauer

Research output: Contribution to journal › Article › peer-review

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/Al_xGa_1-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 language	English
Pages (from-to)	163-166
Number of pages	4
Journal	Solid State Communications
Volume	78
Issue number	2
DOIs	https://doi.org/10.1016/0038-1098(91)90275-Z
Publication status	Published - 1991 Apr
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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AB - 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.

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Exciton unbinding in a confined fermi sea

Abstract

ASJC Scopus subject areas

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