Electron transport in multi-terminal molecular device

Details Electron transport in multi-terminal molecular device Electron transport in multi-terminal molecular device

2009-08-29

arxiv.org/abs/0908.4346v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 figures

Scientific paper

The electron transport properties of a four-terminal molecular device are computed within the framework of density functional theory and non-equilibrium Keldysh theory. The additional two terminals lead to new properties, including a pronounced negative differential resistance not present in a two-terminal setup, and a pseudo-gating effect. In general, quantum interference between the four terminals and the central molecule leads to a complex non-linear behavior, dependent on the alignment of individual molecular states under bias and their coupling to the leads.

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