Effect of intercarrier scattering on intersubband transitions in GaAs/AlGaAs quantum well systems

Manfred Dür, Stephen Goodnick, Paolo Lugli, Benoit Deveaud

Research output: Contribution to journalConference article

4 Scopus citations

Abstract

In the present work, we theoretically investigate the intersubband relaxation of electrons in quantum well systems during photoexcitation using an ensemble Monte Carlo approach. In particular, we compare with recent experimental results by Hartig et al., in which time-resolved photoluminescence measurements are made of the second subband carrier population after band-to-band excitation in a wide coupled quantum well system. In these experiments, the first excited subband energy is less than the polar optical phonon energy. We find excellent agreement between the simulated decay time of the n = 2 subband, and the experimental photoluminescence decay, although it is difficult to distinguish the pure decay time due to electron-electron scattering versus that due to polar optical phonons caused by carrier heating effects.

Original languageEnglish (US)
Pages (from-to)230-233
Number of pages4
JournalPhysica B: Condensed Matter
Volume272
Issue number1-4
DOIs
StatePublished - Dec 1 1999
EventProceedings of the 1999 11th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors (HCIS-11) - Kyoto, Jpn
Duration: Jul 19 1999Jul 23 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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