Band-gap renormalization of modulation-doped quantum wires

S. Sedlmaier, M. Stopa, G. Schedelbeck, W. Wegscheider, G. Abstreiter

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

9 Zitate (Scopus)

Abstract

We measure the photoluminescence spectra for an array of modulation doped, T-shaped quantum wires as a function of the one-dimensional density ne, which is modulated with a surface gate. We present self-consistent electronic structure calculations for this device which show a band-gap renormalization which, when corrected for excitonic energy and its screening, are largely insensitive to ne and which are in quantitatively excellent agreement with the data. The calculations show that electron and hole remain bound up to ∼3 x 106 cm-1 and that, therefore, the stability of the exciton far exceeds the conservative Mott criterion, as determined from the Bethe-Salpeter equation.

OriginalspracheEnglisch
Aufsatznummer201304
Seiten (von - bis)2013041-2013044
Seitenumfang4
FachzeitschriftPhysical Review B - Condensed Matter and Materials Physics
Jahrgang65
Ausgabenummer20
PublikationsstatusVeröffentlicht - 15 Mai 2002

Fingerprint

Untersuchen Sie die Forschungsthemen von „Band-gap renormalization of modulation-doped quantum wires“. Zusammen bilden sie einen einzigartigen Fingerprint.

Dieses zitieren