DIRECT MEASUREMENT OF THE SPATIAL DISPLACEMENT OF BLOCH-OSCILLATING ELECTRONS IN SEMICONDUCTOR SUPERLATTICES

Authors
LYSSENKO VG VALUSIS G LOSER F HASCHE T LEO K DIGNAM MM KOHLER K
Citation
Vg. Lyssenko et al., DIRECT MEASUREMENT OF THE SPATIAL DISPLACEMENT OF BLOCH-OSCILLATING ELECTRONS IN SEMICONDUCTOR SUPERLATTICES, Physical review letters, 79(2), 1997, pp. 301-304
Citations number
21
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
79
Issue
2
Year of publication
1997
Pages
301 - 304
Database
ISI
SICI code
0031-9007(1997)79:2<301:DMOTSD>2.0.ZU;2-7
Abstract
The absolute spatial displacement of Bloch-oscillating electrons in se miconductor superlattices is measured as a function of time with a few angstrom resolution using a novel experimental technique: The oscilla ting Bloch wave packet creates a small dipole field which can be deter mined using the field shift of the Wannier-Stark ladder transitions as a sensitive detector. The total amplitudes and their dependence on th e static electric field are in good agreement with a theory including excitonic effects.