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Transport measurement through stacked InAs self-assembled quantum dots in time domain
- Issue Date
- Mar-2004
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- self-assembled quantum dot; electrical pulse; time domain
- Citation
- PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, v.21, no.2-4, pp.460 - 463
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
- Volume
- 21
- Number
- 2-4
- Start Page
- 460
- End Page
- 463
- ISSN
- 1386-9477
- Abstract
- We report electronic characterization of stacked InAs self-assembled quantum dots (SAQDs) embedded in GaAs, using ultra-short pulses. Electrical pulse trains with the width ranging from 50 to 500 ps were applied on the waveguide-type top electrode and the average substrate current was monitored. The current showed staircases and oscillatory features as a function of the pulse width. The staircase could represent single electron injection into SAQDs and the observed oscillatory features could be related with temporal change of electronic occupation in quantum states of SAQDs. (C) 2003 Elsevier B.V. All rights reserved.
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