Strain driven migration of In during the growth of InAs/GaAs quantum posts

Autor: D. Alonso-Álvarez, B. Alén, J. M. Ripalda, A. Rivera, A. G. Taboada, J. M. Llorens, Y. González, L. González, F. Briones
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: APL Materials, Vol 1, Iss 2, Pp 022112-022112 (2013)
Druh dokumentu: article
ISSN: 2166-532X
DOI: 10.1063/1.4818358
Popis: Using the mechano-optical stress sensor technique, we observe a counter-intuitive reduction of the compressive stress when InAs is deposited on GaAs (001) during the growth of quantum posts. Through modelling of the strain fields, we find that such anomalous behaviour can be related to the strain-driven detachment of In atoms from the crystal and their surface diffusion towards the self-assembled nanostructures.
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