Title: Mesoscopic electronic devices made by local oxidation of a titanium film covering gold islands
Authors: Vullers, RJM
Ahlskog, M
Cannaerts, Maarten
Van Haesendonck, Christian #
Issue Date: Apr-2000
Publisher: Amer inst physics
Series Title: Applied Physics Letters vol:76 issue:14 pages:1947-1949
Abstract: The local oxidation produced by the tip of an atomic force microscope scanning on a thin metallic film allows to define narrow oxide lines, thus providing a method to fabricate lateral tunnel junctions. In such devices, with rather thick tunnel junction barriers, the electrical transport is governed by thermally activated hopping rather than by direct electron tunneling. In this letter we show that tunneling barriers can also be produced with Ti films covering small gold islands. The gold islands significantly shorten the effective tunneling distance, allowing to observe temperature-independent electron tunneling across the lateral barriers. The mixed Ti/Au tunnel barriers reveal Coulomb blockade effects which may be used for single-electron devices consisting of a single oxide line. (C) 2000 American Institute of Physics. [S0003-6951(00)03514-2].
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
# (joint) last author

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