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

Details Mechanical modulation of single-electron tunneling through molecular-assembled metallic nanoparticles Mechanical modulation of single-electron tunneling through molecular-assembled metallic nanoparticles

2004-07-26

arxiv.org/abs/cond-mat/0407678v1

Phys. Rev. B 70, 155408 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Accepted by Phys. Rev. B

Scientific paper

10.1103/PhysRevB.70.155408

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 alkane dithiol molecular bridge and probed by a vibrating platinum tip.

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