Open AccessСпинодальный распад в InSb/AlAs-гетероструктурах
Author(s) -
D. S. Abramkin,
А. К. Бакаров,
А. К. Гутаковский,
Т. С. Шамирзаев
Publication year - 2018
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2018.11.46583.05
Subject(s) - spinodal decomposition , heterojunction , quantum well , alloy , condensed matter physics , materials science , energy spectrum , spectral line , decomposition , band gap , crystallography , chemistry , physics , phase (matter) , optics , metallurgy , quantum mechanics , laser , organic chemistry
The atomic structure and energy spectrum of heterostructures formed in a system of InAs/AlAs binary compounds are studied. The In_ x Al_1 –_ x Sb_ y As_1 –_ y alloy, from which quantum wells are formed in InSb/AlAs structures, decomposes into two phases with different compositions. The characteristic dimensions of regions containing separate phases of the alloy in the structure plane are 5–7 nm. Spinodal decomposition of the alloy brings about the formation of coexisting indirect-gap regions with type-I and type-II energy spectra in quantum wells of the heterostructures.