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Field-induced delocalization and Zener breakdown in semiconductor superlattices

Feldinduzierte Delokalisierung und Zenerdurchbruch in Halbleiterübergittern
 
: Rosam, B.; Meinhold, D.; Löser, F.; Lyssenko, V.; Leo, K.; Glutsch, S.; Bechstedt, F.; Köhler, K.; Rossi, F.

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Physical review letters 86 (2001), No.7, pp.1307-1310
ISSN: 0031-9007
ISSN: 1079-7114
English
Journal Article
Fraunhofer IAF ()
III-V semiconductor; III-V Halbleiter; superlattice; Übergitter; optical measurement; optische Messung; timeresolved measurement; zeitaufgelöste Messung

Abstract
We investigate the energy spectrum and the electron dynamics of a band in a semiconductor superlattice as a function of the electric field. Linear optical spectroscopy shows that, for high fields, the well-known localization of the Bloch states is followed by a field-induced delocalization, associated with Zener breakdown. Using time-resolved measurements, we observe Bloch oscillations in a regime where they are damped by Zener breakdown.

: http://publica.fraunhofer.de/documents/N-4030.html