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The evolution of the structure of quantum size effect Pb nanocrystals on Si(111) 7×7
The evolution of the structure of quantum size effect Pb nanocrystals on Si(111) 7×7
- Source :
- Physica B: Condensed Matter. 357:175-179
- Publication Year :
- 2005
- Publisher :
- Elsevier BV, 2005.
-
Abstract
- We have carried out diffuse X-ray scattering measurements of the growth of Pb nanocrystalline islands on Si(1 1 1). Analysis of our data shows that islands growing on an initially rough wetting layer transforms the portion of the wetting layer below them into ordered fcc sites. Therefore, the islands grow directly on top of the Si surface with a disordered wetting layer occupying the region between the islands and, consequently, the island height responsible for the quantum well depth is one layer thicker than reported by LEED and STM. These islands have an extremely good vertical order until the islands coalesce into a closed film. At that point the disorder of the film increases consistent with misfit strain relaxation.
- Subjects :
- Materials science
Condensed matter physics
business.industry
Scattering
Condensed Matter Physics
Nanocrystalline material
Electronic, Optical and Magnetic Materials
law.invention
Optics
law
Stress relaxation
Wetting
Electrical and Electronic Engineering
Scanning tunneling microscope
business
Layer (electronics)
Quantum well
Wetting layer
Subjects
Details
- ISSN :
- 09214526
- Volume :
- 357
- Database :
- OpenAIRE
- Journal :
- Physica B: Condensed Matter
- Accession number :
- edsair.doi...........3713c9125efcd79396179d40cd839575
- Full Text :
- https://doi.org/10.1016/j.physb.2004.11.051