Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/107247
Title: Three-dimensional finite-element simulations of the self-organized growth of quantum dot superlattices
Authors: Liu, P.
Zhang, Y.W. 
Lu, C.
Issue Date: Nov-2003
Citation: Liu, P.,Zhang, Y.W.,Lu, C. (2003-11). Three-dimensional finite-element simulations of the self-organized growth of quantum dot superlattices. Physical Review B - Condensed Matter and Materials Physics 68 (19) : 1953141-1953148. ScholarBank@NUS Repository.
Abstract: Controlling the self-organized growth of quantum dot superlattices to achieve perfect dot arrays has been studied through three-dimensional computer simulations. A growth window has been identified in which the self-organized quantum dots are arranged in a body-centered tetragonal superlattice with a fixed dot spacing irrespective of growth rates. However, the size of the quantum dots can be tuned through the change of growth rate. Surprisingly, the ordering of the self-organized quantum dot superlattices is controlled by the ordering of strain energy density maxima, which is in contrast with the previous understanding that the ordering of the self-organized quantum dot superlattice is controlled by the ordering of the strain energy density minima. This provides a guideline for the fabrication of quantum dot superlattices.
Source Title: Physical Review B - Condensed Matter and Materials Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/107247
ISSN: 01631829
Appears in Collections:Staff Publications

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