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Effect of surface energy minima on the shape of self‐induced SiGe nanoislands
Author(s) -
Yaremko A. M.,
Dzhagan V. M.,
Lytvyn P. M.,
Yukhymchuk V. O.,
Valakh M. Ya.
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200541123
Subject(s) - maxima and minima , surface (topology) , energy (signal processing) , surface energy , materials science , condensed matter physics , chemistry , nanotechnology , physics , geometry , composite material , mathematics , quantum mechanics , mathematical analysis
The results of a numerical modelling of the influence of discrete surface energy minima on the island shape transition are reported. The real composition of self‐induced (Ge)SiGe/Si nanoislands grown at high temperatures is taken into account in deriving the expression of the island total energy. The simulated values of the critical island size at which the transition occurs are compared with those observed in experiments. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)