Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5091
Title: Kinetic Monte Carlo simulation of faceted islands in heteroepitaxy using a multistate lattice model
Authors: Lam, CH 
Keywords: Deformation
Elemental semiconductors
Germanium
Island structure
Monte Carlo methods
Nucleation
Semiconductor epitaxial layers
Semiconductor growth
Issue Date: 23-Feb-2010
Publisher: American Physical Society
Source: Physical review E, statistical, nonlinear, and soft matter physics, Feb. 2010, v. 81, no. 2, 021607, p. 1-8 How to cite?
Journal: Physical review E, statistical, nonlinear, and soft matter physics 
Abstract: A solid-on-solid model is generalized to study the formation of Ge pyramid islands bounded by (105) facets on Si(100) substrates in two dimensions. Each atomic column is not only characterized by the local surface height but also by two deformation state variables dictating the local surface tilt and vertical extension. These local deformations phenomenologically model surface reconstructions in (105) facets and enable the formation of islands which better resemble faceted pyramids. We apply the model to study a kinetic limited growth regime. Transitions from stepped mounds into faceted islands under deposition conditions are demonstrated. It is shown that a significantly reduced growth rate after faceting leads to a continuous nucleation of new islands until overcrowding occurs. The island size distribution is now dominated by fluctuations in the initial island size during faceting and the increased diversity in the ages of the islands. This multistate model may find applications in kinetic simulations of other nanostructures or nanoclusters involving arbitrary high-index surfaces.
URI: http://hdl.handle.net/10397/5091
ISSN: 1539-3755 (print)
1550-2376 (online)
DOI: 10.1103/PhysRevE.81.021607
Rights: Physical Review E © 2010 The American Physical Society. The Journal's web site is located at http://pre.aps.org/
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Lam_Kinetic_Monte_Carlo.pdf398.87 kBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record

WEB OF SCIENCETM
Citations

7
Last Week
0
Last month
0
Citations as of Aug 25, 2016

Page view(s)

175
Last Week
0
Last month
Checked on Aug 21, 2016

Download(s)

59
Checked on Aug 21, 2016

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.