Quality of AlAs-like and InSb-like interfaces in InAs/AlSb superlattices: An optical study
- 3 May 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 62 (18) , 2274-2276
- https://doi.org/10.1063/1.109393
Abstract
Two short‐period InAs/AlSb superlattices, grown with an AlAs‐like interface and an InSb‐like interface, respectively, were studied with Raman spectroscopy, x‐ray diffraction, and ellipsometry. Our measurements show that the InSb‐like interface grows perfectly pseudomorphically, whereas the sample with the AlAs‐like interface shows indications of relaxation and As interdiffusion. This different interface quality seems to be a fundamental problem, rather than the result of the growth technique.Keywords
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