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Arrays of Au/NiOx/Ni/Au nanowires with a diameter of 50 nm were characterized by conductive atomic force microscopy, which was used to probe the electrical behavior of single nanowires still included in the array. A bipolar switching of the single Au/NiOx/Ni/Au nanowires is demonstrated and is attributed to the choice of an asymmetric couple of electrode materials and, possibly, to a non-uniform Ni oxidation profile inside the NiOx segments. An analysis of the conduction mechanism in a single nanowire is presented to further support this conclusion.
American Institute of Physics
Publication date: 
7 Oct 2013

S Brivio, Daniele Perego, G Tallarida, Massimiliano Bestetti, Silvia Franz, S Spiga

Biblio References: 
Volume: 103 Issue: 15 Pages: 153506
Applied Physics Letters