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The effective thickness, temperature and growth rate behavior of quantum dot ensembles
Author(s) -
Dubrovskii V. G.,
Cirlin G. E.,
Ustinov V. M.
Publication year - 2004
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.200409049
Subject(s) - wetting layer , nucleation , quantum dot , relaxation (psychology) , wetting , substrate (aquarium) , atmospheric temperature range , kinetic energy , range (aeronautics) , materials science , quantum , condensed matter physics , chemical physics , chemistry , nanotechnology , thermodynamics , physics , composite material , classical mechanics , quantum mechanics , psychology , social psychology , oceanography , geology
A kinetic model for the stress driven formation of quantum dots is studied, incorporating the growth of wetting layer, the island nucleation and size relaxation. The derived dependences of the island size and density on the effective thickness, substrate temperature and growth rate provide a detailed characterization of the structural properties of quantum dots. It is shown that in the subcritical thickness range the structure of an ensemble is determined by the thermodynamics and in the overcritical thickness range is kinetically controlled. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)