Interplay between thermodynamics and kinetics in the capping of InAs/GaAs (001) quantum dots

G. Costantini, A. Rastelli, C. Manzano, P. Acosta Diaz, R. Songmuang, G. Katsaros, O. Schmidt, K. Kern, Physical Review Letters 96 (2006).

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Abstract
A microscopic picture for the GaAs overgrowth of self-organized InAs/GaAs(001) quantum dots is developed. Scanning tunneling microscopy measurements reveal two capping regimes: the first being characterized by a dot shrinking and a backward pyramid-to-dome shape transition. This regime is governed by fast dynamics resulting in island morphologies close to thermodynamic equilibrium. The second regime is marked by a true overgrowth and is controlled by kinetically limited surface diffusion processes. A simple model is developed to describe the observed structural changes which are rationalized in terms of energetic minimization driven by lattice mismatch and alloying.
Publishing Year
Date Published
2006-01-01
Journal Title
Physical Review Letters
Volume
96
Issue
22
IST-REx-ID

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Costantini G, Rastelli A, Manzano C, et al. Interplay between thermodynamics and kinetics in the capping of InAs/GaAs (001) quantum dots. Physical Review Letters. 2006;96(22). doi:10.1103/PhysRevLett.96.226106
Costantini, G., Rastelli, A., Manzano, C., Acosta Diaz, P., Songmuang, R., Katsaros, G., … Kern, K. (2006). Interplay between thermodynamics and kinetics in the capping of InAs/GaAs (001) quantum dots. Physical Review Letters, 96(22). https://doi.org/10.1103/PhysRevLett.96.226106
Costantini, Giovanni, Armando Rastelli, Carlos Manzano, P Acosta Diaz, Rudeeson Songmuang, Georgios Katsaros, Oliver Schmidt, and Klaus Kern. “Interplay between Thermodynamics and Kinetics in the Capping of InAs/GaAs (001) Quantum Dots.” Physical Review Letters 96, no. 22 (2006). https://doi.org/10.1103/PhysRevLett.96.226106.
G. Costantini et al., “Interplay between thermodynamics and kinetics in the capping of InAs/GaAs (001) quantum dots,” Physical Review Letters, vol. 96, no. 22, 2006.
Costantini G, Rastelli A, Manzano C, Acosta Diaz P, Songmuang R, Katsaros G, Schmidt O, Kern K. 2006. Interplay between thermodynamics and kinetics in the capping of InAs/GaAs (001) quantum dots. Physical Review Letters. 96(22).
Costantini, Giovanni, et al. “Interplay between Thermodynamics and Kinetics in the Capping of InAs/GaAs (001) Quantum Dots.” Physical Review Letters, vol. 96, no. 22, American Physical Society, 2006, doi:10.1103/PhysRevLett.96.226106.

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