Pingue, P., Piazza, V., Beltram, F. et al. (3 more authors)
(2005)
Coulomb blockade directional coupler.
Applied Physics Letters, 86.
052102 .
ISSN 0003-6951
Abstract
A tunable directional coupler based on Coulomb blockadeeffect 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∕AlGaAsheterojunction. 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 blockadeeffect and the relevance of the present design strategy for the implementation of an electronic multiplexer is underlined.
Metadata
Item Type:
Article
Authors/Creators:
Pingue, P.
Piazza, V.
Beltram, F.
Farrer, I.
Ritchie, D.A.
Pepper, M.
Copyright, Publisher and Additional Information:
Copyright 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
The following article appeared in Appl. Phys. Lett. 86, 052102 (2005) and may be found at http://dx.doi.org/10.1063/1.1857078.
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