Nanomechanical modulation of single-electron tunneling through molecular-assembled metallic nanoparticles

Yongqiang Xue, Mark A Ratner

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We present a microscopic study of single-electron tunneling in nanomechanical double-barrier tunneling junctions formed using a vibrating scanning nanoprobe and a metallic nanoparticle connected to a metallic substrate through a molecular bridge. We analyze the motion of single electrons on and off the nanoparticle through the tunneling current, the displacement current, and the charging-induced electrostatic force on the vibrating nanoprobe. We demonstrate the mechanical single-electron turnstile effect by applying the theory to a gold nanoparticle connected to the gold substrate through an alkane dithiol molecular bridge and probed by a vibrating platinum tip.

Original languageEnglish
Article number155408
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number15
DOIs
Publication statusPublished - Oct 2004

Fingerprint

Electron tunneling
electron tunneling
Nanoprobes
Modulation
Nanoparticles
modulation
Gold
nanoparticles
gold
Alkanes
Electrostatic force
Electrons
Substrates
Platinum
thiols
Paraffins
alkanes
charging
platinum
electrons

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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AB - We present a microscopic study of single-electron tunneling in nanomechanical double-barrier tunneling junctions formed using a vibrating scanning nanoprobe and a metallic nanoparticle connected to a metallic substrate through a molecular bridge. We analyze the motion of single electrons on and off the nanoparticle through the tunneling current, the displacement current, and the charging-induced electrostatic force on the vibrating nanoprobe. We demonstrate the mechanical single-electron turnstile effect by applying the theory to a gold nanoparticle connected to the gold substrate through an alkane dithiol molecular bridge and probed by a vibrating platinum tip.

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