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Title

Atomic layer MBE growth and characterization of AlAs/InAs strained layer superlattices on GaAs

AuthorsGonzález Sotos, Luisa ; Ruiz, A.; Mazuelas Esteban, Ángel José ; Armelles Reig, Gaspar ; Recio Segoviano, Miguel ; Briones Fernández-Pola, Fernando
Issue Date1989
PublisherElsevier
CitationSuperlattices and Microstructures 5(1): 5-9 (1989)
AbstractA recent development of Molecular Beam Epitaxy (MBE) — the Atomic Layer Molecular Beam Epitaxy — has been used to grow AlAs/InAs strained layer superlattices (SLS) on (001)GaAs at low growth temperatures (Ts < 400°C). The growth process basically consists on alternating group V and/or group III beams following an optimum timing established by RHEED oscillations observation during the monolayer formation sequence. This method allows to grow at low substrate temperature with excellent morphology, even for those systems which have extremely different optimum MBE growth conditions and a severe lattice mismatch of 7% like AlAs/InAs. X-ray diffraction and optical characterization results for superlattices of different periodicities are presented. In particular, Raman spectra of these samples showing folded acoustic phonons demonstrate their quality.
Description5 páginas, 5 figuras, 1 tabla.-- Comunicación presentada a la 4ª Conference on Superlattices and Microstructures celebrada en Trieste (Italia/1988).
Publisher version (URL)http://dx.doi.org/10.1016/0749-6036(89)90060-8
URIhttp://hdl.handle.net/10261/33871
DOI10.1016/0749-6036(89)90060-8
ISSN0749-6036
Appears in Collections:(IMN-CNM) Artículos
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