Bipolar resistive switching of Au/NiOx/Ni/Au heterostructure nanowires

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 attri...

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Bibliographic Details
Published in:Applied physics letters 2013-10, Vol.103 (15)
Main Authors: Brivio, S., Perego, D., Tallarida, G., Bestetti, M., Franz, S., Spiga, S.
Format: Article
Language:English
Subjects:
Arrays
Asymmetry
Gold
Joining
Nanowires
Nickel
Segments
Switching
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Summary: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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4824763