Oscillatory behavior of magneto-optical interband emissions in asymmetric quantum well structures

✍ Scribed by A.R. Alves; L.A. Cury; P.S.S. Guimarães; M.V.B. Moreira

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 144 KB
• Volume: 21
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1996.0209

✦ Synopsis

We report on the oscillatory behavior of the photoluminescence intensity from asymmetric AlGaAs/InGaAs/GaAs quantum well structures in the presence of a perpendicular magnetic field. Two distinct photoluminescence peaks originating from transitions from the ground (e 1 ) and the first excited (e 2 ) electronic states to the heavy hole state (hh 1 ) are observed. The opposite phase of the oscillations shows clearly the competitive process between the transitions from the ground and first excited states. Electron transfer mechanisms cannot explain the origin of these oscillations. The optical oscillations emerge from changes in the effective electron-hole interaction.