Metal atomic contacts under defined environmental conditions

• Nakazumi Tomoka

  Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology

• Murai Daigo

  Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology

• Tsukagoshi Kazuhito

  WPI Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science

• Kiguchi Manabu

  Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology

Abstract

We have developed a measurement system for investigating metal atomic contacts under defined environmental conditions (0.1 Pa–10⁵ Pa, 4 K–300 K). Using this newly developed system, the conductance behavior and lifetime of Au atomic contacts were investigated in vacuum and in an oxygen atmosphere (～10⁵ Pa) at room temperature. The conductance curves and conductance histograms of the Au contacts in vacuum agreed with those measured in the oxygen atmosphere, indicating a weak interaction between oxygen and Au atomic contact. While the conductance behavior was not affected by the presence of oxygen, the lifetime of the Au atomic contact was slightly increased by the presence of oxygen.

Journal

• Transactions of the Materials Research Society of Japan

  Transactions of the Materials Research Society of Japan 39 (2), 225-229, 2014

  The Materials Research Society of Japan

Keywords

• metal atomic contact
• quantized conductance
• mechanically controllable break junction
• self-breaking

Details

• CRID: 1390001205511934976
• NII Article ID: 130005004331
• DOI: 10.14723/tmrsj.39.225
• ISSN: 21881650
• ISSN: 13823469
• Web Site: https://www.jstage.jst.go.jp/article/tmrsj/39/2/39_225/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed