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InAs wetting layer and quantum dots on GaAs(001) surface studied by in situ STM placed inside MBE growth chamber and kMC simulations based on first-principles calculations
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Tsukamoto, Shiro, Bell, Gavin R., Ishii, Akira and Arakawa, Yasuhiko (2007) InAs wetting layer and quantum dots on GaAs(001) surface studied by in situ STM placed inside MBE growth chamber and kMC simulations based on first-principles calculations. AIP Conference Proceedings, Vol.893 (No.1). pp. 101-102. doi:10.1063/1.2729790
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Official URL: http://dx.doi.org/10.1063/1.2729790
Abstract
Dynamic images of InAs quantum dots (QDs) formation are obtained using a unique scanning tunneling microscope (STM) placed within the growth chamber. These images are interpreted with the aid of kinetic Monte Carlo (kMC) simulations of the QD nucleation process. Alloy fluctuations in the InGaAs wetting layer prior to QD formation assist in the nucleation of stable InAs islands containing tens of atoms which grow extremely rapidly to form QDs. Furthermore, not all deposited In is initially incorporated into the lattice, providing a large supply of material to rapidly form QDs at the critical thickness. ©2007 American Institute of Physics
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
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| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Quantum dots, Scanning tunneling microscopy, Monte Carlo method | ||||
| Journal or Publication Title: | AIP Conference Proceedings | ||||
| Publisher: | American Institute of Physics | ||||
| ISSN: | 0094-243X | ||||
| Official Date: | 10 April 2007 | ||||
| Dates: |
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| Volume: | Vol.893 | ||||
| Number: | No.1 | ||||
| Page Range: | pp. 101-102 | ||||
| DOI: | 10.1063/1.2729790 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Description: | Conference proceedings of 28th International Conference on the Physics of Semiconductors - ICPS 2006 |
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| Conference Paper Type: | Paper | ||||
| Type of Event: | Conference |
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