Time-resolved photoluminescence study of InGaAs/GaAs quantum wells on (111)B GaAs substrates under magnetic fields

Time-resolved photoluminescence study of InGaAs/GaAs quantum wells on (111)B GaAs substrates under magnetic fields

The exciton dynamics in InxGa1−xAs/GaAs quantum wells grown on (111)B and (100) GaAs substrates were studied by time-resolved photoluminescence (PL) under magnetic fields in a Faraday configuration. We have found that the piezoelectric fields in (111)B samples affect the transient behavior of the PL...

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Veröffentlicht in:Journal of applied physics 2001-06, Vol.89 (12), p.7875-7878
Hauptverfasser: Tsai, F. Y., Lee, C. P., Voskoboynikov, O., Cheng, H. H., Shen, Jinxi, Oka, Yasuo
Format: Artikel
Sprache:eng
Schlagworte:
CONFIGURATION
EXCITONS
MAGNETIC FIELDS
PHOTOLUMINESCENCE
PHYSICS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
SPECTRA
SUBSTRATES
TRANSIENTS
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Zusammenfassung:The exciton dynamics in InxGa1−xAs/GaAs quantum wells grown on (111)B and (100) GaAs substrates were studied by time-resolved photoluminescence (PL) under magnetic fields in a Faraday configuration. We have found that the piezoelectric fields in (111)B samples affect the transient behavior of the PL spectra. Compared with the reference (100) sample, we have found that the strong piezoelectric fields, as well as the magnetic fields, cause a slower spin–flip process in (111)B strained quantum wells.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1376401