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 | Issue Date: | 23-Feb-2010 | Source: | Physical review. E, Statistical, nonlinear, and soft matter physics, Feb. 2010, v. 81, no. 2, 021607, p. 1-8 | 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. | Keywords: | Deformation Elemental semiconductors Germanium Island structure Monte Carlo methods Nucleation Semiconductor epitaxial layers Semiconductor growth |
Publisher: | American Physical Society | Journal: | Physical review. E, Statistical, nonlinear, and soft matter physics | ISSN: | 1539-3755 | EISSN: | 1550-2376 | 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 | Size | Format | |
|---|---|---|---|---|
| Lam_Kinetic_Monte_Carlo.pdf | 398.87 kB | Adobe PDF | View/Open |
Access
View full-text via PolyU eLinks 
Page views
94
Last Week
1
1
Last month
Citations as of Sep 17, 2023
Downloads
136
Citations as of Sep 17, 2023
SCOPUSTM
Citations
10
Last Week
0
0
Last month
Citations as of Sep 21, 2023
WEB OF SCIENCETM
Citations
8
Last Week
0
0
Last month
0
0
Citations as of Sep 21, 2023
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.