Suppression of coalescence during the coarsening of quantum dot arrays

D. E. Jesson; T. P. Munt; V. A. Shchukin; D. Bimberg

doi:10.1103/PhysRevB.69.041302

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Suppression of coalescence during the coarsening of quantum dot arrays

D. E. Jesson, T. P. Munt, V. A. Shchukin, and D. Bimberg

Phys. Rev. B 69, 041302(R) – Published 15 January 2004

Abstract

We present a model of quantum dot coarsening which incorporates the elastic interaction between coherently strained islands of a conical shape. This is used to simulate coalescence phenomena in dense island arrays where the precise form of near-field elastic interactions is a critical feature of the coarsening kinetics. Elastic repulsion between islands is found to suppress coalescence and promote Ostwald ripening driven coarsening. This significantly impacts the time evolution of dense quantum dot arrays.

Received 17 June 2003

DOI:https://doi.org/10.1103/PhysRevB.69.041302

Authors & Affiliations

D. E. Jesson^* and T. P. Munt

Department of Physics, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom

V. A. Shchukin^† and D. Bimberg

Institut für Festkörperphysik, Technische Universität Berlin, D-10623 Berlin, Germany

^*Present address: School of Physics and Materials Engineering, Monash University, Victoria 3800, Australia.
^†On leave from A. F. Ioffe Physical Technical Institute, St. Petersburg 194021, Russia.

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Vol. 69, Iss. 4 — 15 January 2004

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