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Individual transport of electrons through a chemisorbed Au nanodot in Coulomb blockade electron shuttles

Research output: Contribution to journalJournal article


  • Yasuo Azuma
  • Norihiro Kobayashi
  • Simon Chorley
  • Jonathan Prance
  • Charles G. Smith
  • Daisuke Tanaka
  • Masayuki Kanehara
  • Toshiharu Teranishi
  • Yutaka Majima
Article number024303
<mark>Journal publication date</mark>15/01/2011
<mark>Journal</mark>Journal of Applied Physics
Number of pages5
<mark>Original language</mark>English


The individual transport of electrons through a chemisorbed Au nanodot is observed in accordance with a nanomechanical vibration of the Au nanodot on a cantilever at 86 MHz; the experimental setup consists of a scanning tunneling microscopy probe/vacuum/chemisorbed Au nanodot/cantilever. In the tunneling current-distance characteristics, a constant current of ef [where f is an eigenfrequency of the cantilever (86 MHz)] is observed as a plateau over a distance of 0.35 nm; this plateau is five times wider than that observed in the case of physisorbed Au nanodots. Coulomb blockade electron shuttle devices with chemisorbed Au nanodots are one of the candidates for current standard devices. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3525833]