Electronic conduction in a three-terminal molecular transistor

Details Electronic conduction in a three-terminal molecular transistor Electronic conduction in a three-terminal molecular transistor

2008-09-22

arxiv.org/abs/0809.3796v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 5 figures

Scientific paper

10.1088/0957-4484/19/50/505203

The electronic conduction of a novel, three-terminal molecular architecture, analogous to a heterojunction bipolar transistor is studied. In this architecture, two diode arms consisting of donor-acceptor molecular wires fuse through a ring, while a gate modulating wire is a \pi-conjugated wire. The calculated results show the enhancement or depletion mode of a transistor by applying a gate field along the positive or negative direction. A small gate field is required to switch on the current in the proposed architecture. The changes in the electronic conduction can be attributed to the intrinsic dipolar molecular architecture in terms of the evolution of molecular wavefunctions, specifically the one associated with the terphenyl group of the modulating wire in the presence of the gate field.

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