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EnglishA tunable directional coupler based on Coulomb blockade effect is presented. Two electron waveguides are coupled by a quantum dot to an injector waveguide. Electron confinement is obtained by surface Schottky gates on a single GaAs/AlGaAs heterojunction. Magneto-electrical measurements down to 350mK are presented and large transconductance oscillations are reported on both outputs up to 4.2K. Experimental results are interpreted in terms of Coulomb blockade effect and the relevance of the present design strategy for the implementation of an electronic multiplexer is underlined.
A tunable directional coupler based on Coulomb blockade effect is presented. Two electron waveguides are coupled by a quantum dot to an injector waveguide. Electron confinement is obtained by surface Schottky gates on a single GaAs/AlGaAs heterojunction. Magneto-electrical measurements down to 350 mK are presented and large transconductance oscillations are reported on both outputs up to 4.2 K. Experimental results are interpreted in terms of Coulomb blockade effect and the relevance of the present design strategy for the implementation of an electronic multiplexer is underlined.
| Titolo: | Coulomb blockade directional coupler | |
| Autori: | ||
| Editore: | American Institute of Physics | |
| Data di pubblicazione: | 2005 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1063/1.1857078 | |
| Parole Chiave: | Quantum Dots; Magnetic fields; Electron gas; Culomb blockade | |
| Parole chiave (inglese): | electric connectors heterojunctions MESFET devices multiplexing Physics semiconducting gallium arsenide transconductance waveguides | |
| Handle: | http://hdl.handle.net/11384/13193 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| APL4.pdf | article full text | Altro materiale allegato | Accesso gratuito (sola lettura) | Open Access Visualizza/Apri |
http://hdl.handle.net/11384/13193
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