Three-terminal devices to examine single molecule conductance switching

Details Three-terminal devices to examine single molecule conductance switching Three-terminal devices to examine single molecule conductance switching

2006-05-24

arxiv.org/abs/cond-mat/0605609v2

Nano Lett. 6, 1518-1521 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures. Supporting material available upon request

Scientific paper

10.1021/nl061117+

We report electronic transport measurements of single-molecule transistor devices incorporating bipyridyl-dinitro oligophenylene-ethynylene dithiol (BPDN-DT), a molecule known to exhibit conductance switching in other measurement configurations. We observe hysteretic conductance switching in 8% of devices with measurable currents, and find that dependence of the switching properties on gate voltage is rare when compared to other single-molecule transistor devices. This suggests that polaron formation is unlikely to be responsible for switching in these devices. We discuss this and alternative switching mechanisms.

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