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Fabrication of stable metal nanowire showing conductance quantization in solution

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Title: Fabrication of stable metal nanowire showing conductance quantization in solution
Authors: Kiguchi, Manabu Browse this author
Miura, Shinichi Browse this author
Murakoshi, Kei Browse this author
Keywords: Electrical transport measurements
Electrochemical potential control
Scanning tunneling microscopy
Conductance quantization
Organic molecules
Issue Date: 15-Sep-2007
Publisher: Elsevier B.V.
Journal Title: Surface Science
Volume: 601
Issue: 18
Start Page: 4127
End Page: 4130
Publisher DOI: 10.1016/j.susc.2007.04.070
Abstract: We have mechanically fabricated Cu nanowires in solutions with and without thiourea. In both solutions, the conductance was quantized in units of G0 (2e2/h). A well-defined 1 G0 peak was observed in the conductance histogram. While the conductance value was not changed, the stability of the mono atomic contact was improved by adding thiourea. The effect of thiourea on the stability of the atomic contact was investigated by measuring the stretched length of the atomic contact. The average length of the last plateau was 0.044 nm in the solution without thiourea. The length increased to 0.076 nm in the solution with thiourea. The stabilization could be explained by the decrease in the surface energy caused by adsorption of thiourea molecules on the Cu nanowires.
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 木口 学

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