open access

https://hdl.handle.net/2115/14479

Fabrication of sustainable Au mono-atomic wire showing conductance quantization in solution

英語

Anion

2005

日本ＭＲＳ

Transactions of the Materials Research Society of Japan

30(4)

1215-1218

Electric conductance of the Au nano constrictions was investigated in 0.1M Na2SO4 solution under electrochemical potential control. Point contact of Au showing the unit of the quantum conductance, G0 (2e^2/h), can be stretched as long as 1 nm when the electrochemical potential of the contact was kept at 0.5 V vs. Ag/AgCl. The result proves superior stability of Au mono atomic wire fabricated in solution. As the electrochemical potential changed to negative, the stretch length of the mono atomic wire decreased. The change of the stability was recovered as the potential became positive, indicating that the stability of the wire can be fully controlled by the electrochemical potential. In the time cause of the conductance trace, fluctuation was observed. The change in the value in the conductance was less than -15%. This fluctuation was attributed to the change in the number of atoms in the mono atomic wire. Observed changes in the conductance reflect the characteristics of the dynamical formation/deformation processes of the mono atomic wire showing conductance quantization in solution at room temperature.

学術雑誌論文

Accepted Manuscript

1382-3469