Mechanically-adjustable and electrically-gated single-molecule transistors

TL;DR

This paper introduces a novel single-molecule transistor device that allows independent mechanical and electrical tuning, enabling more detailed electron transport studies through molecules like C60.

Contribution

It presents a new device geometry combining mechanical adjustment and electrical gating for single-molecule electronics experiments.

Findings

Enhanced control over molecular properties during experiments

Improved characterization of electron transport mechanisms

Demonstrated device performance with C60 molecules

Abstract

We demonstrate a device geometry for single-molecule electronics experiments that combines both the ability to adjust the spacing between the electrodes mechanically and the ability to shift the energy levels in the molecule using a gate electrode. With the independent in-situ variations of molecular properties provided by these two experimental "knobs", we are able to achieve a much more detailed characterization of electron transport through the molecule than is possible with either technique separately. We illustrate the devices' performance using C60 molecules.