CUED Publications database

Surface acoustic waves in liquid helium for enhanced single-electron transport applications

Pedros, J and Garcia-Gancedo, L and Ford, CJB and Benesh, MJ and Griffiths, JP and Jones, GAC and Flewitt, AJ (2012) Surface acoustic waves in liquid helium for enhanced single-electron transport applications. IEEE International Ultrasonics Symposium, IUS. ISSN 1948-5719

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Abstract

High frequency Rayleigh and Sezawa modes propagating in the ZnO/GaAs system capable of operating immersed in liquid helium have been engineered. In the case of the Rayleigh mode, the strong attenuation produced by the liquid is counteracted by the strengthening of the mode induced by the ZnO. However, in the case of the Sezawa modes, the attenuation is strongly reduced taking advantage of the depth profile of their acoustic Poynting vectors, that extend deeper into the layered system, reducing the energy radiated into the fluid. Thus, both tailored modes will be suitable for acoustically-driven single-electron and single-photon devices in ZnO-coated GaAs-based systems with the best thermal stability provided by the liquid helium bath. © 2012 IEEE.

Item Type: Article
Uncontrolled Keywords: acoustic Poynting vector liquid helium single-electron transport surface acoustic wave (SAW)
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:45
Last Modified: 08 Dec 2014 02:17
DOI: 10.1109/ULTSYM.2012.0194