Issue |
EPL
Volume 88, Number 6, December 2009
|
|
---|---|---|
Article Number | 66003 | |
Number of page(s) | 6 | |
Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
DOI | https://doi.org/10.1209/0295-5075/88/66003 | |
Published online | 04 January 2010 |
Two-dimensional imaging of III-V quantum dots confinement potential
1
Solid States Physics, Electro-Optics Division, Soreq NRC - Yavne, 81800 Israel
2
School of Electrical Engineering-Physical Electronics, Faculty of Engineering, Tel-Aviv University Tel-Aviv, 69978, Israel
3
Departamento de Lenguajes y Sistemas Informáticos, CASEM, Universidad de Cádiz Pol. Rio San Pedro s/n. 11510, Puerto Real, Cadiz, Spain, EU
4
Applied Physics Department and the Center for Nano Science and Nanotechnology, The Hebrew University Jerusalem 91904, Israel
Corresponding author: paltiel@cc.huji.ac.il
Received:
13
September
2009
Accepted:
22
November
2009
Composition, doping, size, and strain distribution within quantum dots, and at the dots-substrate interfaces, determine the confinement potential of electrons and holes creating a complex band structure. We use ultra-high vacuum Kelvin probe force microscopy to obtain the two-dimensional confinement potential in and around InAs and InSb dots epitaxially grown on GaAs. It is found that the potential manifests rich features governed by the strain and composition variations in the vicinity of the individual quantum dots. The results can adjust or confirm theoretical predictions for many epitaxial dots systems.
PACS: 68.65.Hb – Low-dimensional mesoscopic and nanoscale systems: structure and non- electronic properties: Quantum dots / 73.21.La – Electron states and collective excitations in multilayers quantum wells mesoscopic and nanoscale systems: Quantum dots / 78.67.Hc – Optical properties of low-dimensional mesoscopic and nanoscale materials and structures: Quantum dots
© EPLA, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.