Incoherent dynamics of vibrating single-molecule transistors

Details Incoherent dynamics of vibrating single-molecule transistors Incoherent dynamics of vibrating single-molecule transistors

2002-05-20

arxiv.org/abs/cond-mat/0205419v3

Physics

Condensed Matter

6 pages, LaTex, 6 figures

Scientific paper

10.1103/PhysRevB.67.245415

We study the tunneling conductance of nano-scale quantum ``shuttles'' in connection with a recent experiment (H. Park et al., Nature, 407, 57 (2000)) in which a vibrating C^60 molecule was apparently functioning as the island of a single electron transistor (SET). While our calculation starts from the same model of previous work (D. Boese and H. Schoeller, Europhys. Lett. 54, 66(2001)) we obtain quantitatively different dynamics. Calculated I-V curves exhibit most features present in experimental data with a physically reasonable parameter set, and point to a strong dependence of the oscillator's potential on the electrostatics of the island region. We propose that in a regime where the electric field due to the bias voltage itself affects island position, a "catastrophic" negative differential conductance (NDC) may be realized. This effect is directly attributable to the magnitude of overlap of final and initial quantum oscillator states, and as such represents experimental control over quantum transitions of the oscillator via the macroscopically controllable bias voltage.

Affiliated with

Also associated with

No associations

Rating

Incoherent dynamics of vibrating single-molecule transistors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Incoherent dynamics of vibrating single-molecule transistors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Incoherent dynamics of vibrating single-molecule transistors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-242322