%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ESR3H2
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%@issn 0022-0248
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%@resumeid 8JMKD3MGP5W/3C9JJ37
%@resumeid 8JMKD3MGP5W/3C9JGUH
%X In this work, we report on the growth of EuTe/SnTe superlattices (SLs) on BaF2 (1 1 1) substrates by molecular beam epitaxy. Reflection high energy electron diffraction allowed to find the growth modes at each growth stage, while high resolution X-ray diffraction (HRXRD) was employed to evaluate the heterostructure crystalline quality. In four subsequent stages, we studied the growth of SnTe buffer layers, the growth of EuTe on SnTe, the growth of SnTe on EuTe, and finally undertook the SLs growth. EuTe grows in the Stranski-Krastanov mode on SnTe, with a critical thickness for island formation that increases for lower temperatures and higher Te/Eu flux ratios. On the other hand, SnTe starts growing in the Volmer-Weber mode on EuTe, with evolution to layer-by-layer growth after the SnTe islands merge, which occurs faster for higher temperatures. As confirmed by HRXRD ù / 2 è scans measured along the (2 2 2) SL Bragg peak, high structural quality EuTe/SnTe SLs were grown with EuTe layers below the critical thickness for island formation and SnTe layers thick enough for layer-by-layer growth to be restored. The X-ray spectra were fitted with those calculated using dynamical diffraction theory in order to find accurately the individual layer thicknesses and strain status.
%8 Oct.
%N 1
%T Molecular beam epitaxial growth of EuTe/SnTe strained superlattices
%@secondarytype PRE PI
%K A1. High resolution X-ray diffraction, A1. Reflection high energy electron diffraction, A3. Molecular beam epitaxy, A3. Superlattices, B2. Semiconducting materials.
%@usergroup administrator
%@usergroup simone
%@group LAS-INPE-MCT-BR
%@group LAS-INPE-MCT-BR
%@group LAS-INPE-MCT-BR
%3 molecular beam.pdf
%@copyholder SID/SCD
%@secondarykey INPE-15049-PRE/9958
%2 sid.inpe.br/mtc-m17@80/2007/12.10.17.01.33
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%B Journal of Crystal Growth
%P 218-222
%4 sid.inpe.br/mtc-m17@80/2007/12.10.17.01
%@documentstage not transferred
%D 2007
%V 308
%@doi 10.1016/j.jcrysgro.2007.07.044
%A Díaz, Beatriz,
%A Rappl, Paulo Henrique de Oliveira,
%A Abramof, Eduardo,
%@dissemination WEBSCI; PORTALCAPES.
%@area FISMAT