Spatial correlations and Raman scattering interferences in self-assembled quantum dot multilayers - art. no. 033306

Authors
Cazayous, M Groenen, J Huntzinger, JR Mlayah, A Schmidt, OG
Citation
M. Cazayous et al., Spatial correlations and Raman scattering interferences in self-assembled quantum dot multilayers - art. no. 033306, PHYS REV B, 6403(3), 2001, pp. 3306
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6403
Issue
3
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010715)6403:3<3306:SCARSI>2.0.ZU;2-7
Abstract
Raman scattering is shown to provide an effective means to measure spatial correlations in self-assembled quantum dot multilayers. Raman scattering in terferences occur when an acoustic phonon interacts with an ensemble of loc alized electronic stales. The interference contrast depends on their spatia l correlations. Vertical correlations in self-assembled Ge/Si quantum dot m ultilayers are deduced from the interference contrast and successfully comp ared with those measured by transmission electron microscopy.