Affordable Access

Publisher Website

Photoluminescence spectroscopy on excitonic states of narrow GaAs–AlGaAs single quantum wells in high magnetic field

Authors
Journal
Superlattices and Microstructures
0749-6036
Publisher
Elsevier
Publication Date
Volume
24
Issue
4
Identifiers
DOI: 10.1006/spmi.1996.0660
Keywords
  • Single Quantum Well
  • Diamagnetic Shift
  • Magneto-Photoluminescence
  • Interface Roughness
  • Two-Dimensional Confinement
Disciplines
  • Physics

Abstract

Abstract Magneto-photoluminescence (PL) experiments of very thin GaAs/Al 0.3Ga 0.7As quantum wells were performed in a magnetic field ( B) of up to 20 T. It has been observed that the diamagnetic shift changes abruptly from β B 2to α Baround 5 T as Bincreases, and both α and β become larger as the well-width increases. This B-dependent transition is indicative of the change of electron–hole ( e–h) coupling as the cyclotron radius becomes comparable with that of the exciton. The change of PL linewidth by Balso supports the concept that the e–hrecombination is sensitive to the dimensionality.

There are no comments yet on this publication. Be the first to share your thoughts.