On the correlation between the self-organized island pattern and substrate elastic anisotropy

Abstract

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Three-dimensional InAs/GaAs quantum-dot islands size and density study using kinetic Monte Carlo simulation

“…The 3D KMC growth model is developed from our 2D (x,y)-plane growth model, 10,11 where diffusion of the InAs compound ( on the surface of GaAs substrate) was simulated by assuming them as a single species with cubic crystal structures [see, e. g., Ref. 12].…”

Kinetic Monte Carlo simulation of self-organized growth of PbSe/PbEuTe quantum dot multilayers

“…The effect of different growth parameters on the final surface morphology was investigated in details by Meixner et al 20 and many others. Pan et al 21 studied the QD ordering on GaAs substrates with different surface orientation and confirmed a strong influence of elastic anisotropy on the resulting QD patterns. Zhu et al 22 recently proposed a fast multiscale KMC model designed for simulation of 3D self-assembled QD layers.…”

“…The other KMC models used for QDs epitaxial growth studies [13][14][15][16][17][18][19][20][21][22][23][24][25]33,34,36 are miscellaneous variations in a bond-counting model. In our model, the conventional bondcounting approach and detailed atomistic monitoring of a structure of the growing ͑2D or 3D͒ islands are substituted by the critical nucleus concept and a fixed ͑but arbitrary ad-justable͒ shape of the simulated QDs.…”

Kinetic Monte Carlo simulation of site-controlled GaAs/AlGaAs QDs growth on structured substrate

“…While some theoretical approaches for QD self-assembly on prepatterned substrates have been discussed by KMC method before, however, the patterned substrate is plat with different elastic energy field distribution and stress field distribution [12][13][14]. The simulation work considering the geometry of structured substrate has been seldom carried out.…”