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Direct Observation of dynamical screening of the intersubband resonance

Direkte Beobachtung der dynamischen Abschirmung von Untersubband-Resonanzen
 
: Graf, S.; Sigg, H.; Köhler, K.; Bächtold, W.

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Physica. E 7 (2000), S.200-203
ISSN: 1386-9477
Englisch
Zeitschriftenaufsatz
Fraunhofer IAF ()
III-V semiconductors; III-V Halbleiter; superlattices; Übergitter; optical measurements; optische Messungen

Abstract
We have studied the intersubband resonance of GaAs, AlGaAs multi-quantum well systems by comparing photon drag and absorption spectra. The peak absorption at room temperature is found to be blueshifted from the photon drag resonance by as much as 33 cm(exp -1). We argue that this difference gives directly the depolarization shift.

: http://publica.fraunhofer.de/dokumente/N-1257.html