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Excitonic Mott transition in type-II quantum dots.

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  • Bhavtosh Bansal
  • Manus Hayne
  • Martin Geller
  • Dieter Bimberg
  • Victor Moshchalkov
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Article number241304(R)
<mark>Journal publication date</mark>13/06/2008
<mark>Journal</mark>Physical Review B
Volume77
Number of pages4
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

Photoluminescence spectra measured on a type-II GaSb/GaAs quantum dot ensemble at high excitation power indicate a Mott transition from the low density state comprising of spatially indirect excitons to a high density electron-plasma state. Under the influence of a very high magnetic field, the electron-plasma that is formed at high excitation powers is transformed into magneto-excitons.

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© 2008 The American Physical Society