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Title

Interdependence of strain and shape in self-assembled coherent InAs islands on GaAs

AuthorsKegel, I.; Metzger, T. H.; Fratzl, P.; Peisl, J.; Lorke, Axel; García Martínez, Jorge Manuel ; Petroff, Pierre M.
KeywordsSurfaces
Interfaces and thin films
Issue Date15-Jan-1999
PublisherEDP Sciences
CitationEurophysics Letters 45(2): 222-227 (1999)
AbstractSelf-assembled coherent InAs islands on GaAs (100) have been investigated by a novel version of grazing-incidence diffraction ("iso-strain scattering"). This method permits the determination of the interdependence of strain and shape, as well as the relaxation gradient within the InAs dots. The relaxation in the islands ranges from fully strained at the bottom to completely relaxed at the top of the islands. The radius of the dots at a given height depends linearly on the local elastic lattice relaxation, with a rapidly increasing relaxation gradient when approaching the top of the islands.
Description6 páginas, 3 figuras.-- PACS: 68.55.-a Thin film structure and morphology, 61.05.C- X-ray diffraction and scattering, 61.10.-i X-ray diffraction and scattering.
Publisher version (URL)http://dx.doi.org/10.1209/epl/i1999-00150-y
URIhttp://hdl.handle.net/10261/29026
DOI10.1209/epl/i1999-00150-y
ISSN0295-5075
Appears in Collections:(IMN-CNM) Artículos
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