Barrier-Free Tunneling in a Carbon Heterojunction Transistor

Details Barrier-Free Tunneling in a Carbon Heterojunction Transistor Barrier-Free Tunneling in a Carbon Heterojunction Transistor

2010-11-16

arxiv.org/abs/1011.3787v1

Applied Physics Letters, vol.97, p.033102 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

14 pages, 3 figures

Scientific paper

Recently it has been experimentally shown that a graphene nanoribbon (GNR) can be obtained by unzipping a carbon nanotube (CNT). This makes it possible to fabricate all-carbon heterostructures that have a unique interface between a CNT and a GNR. Here we demonstrate that such a heterojunction may be utilized to obtain a unique transistor operation. By performing a self-consistent non-equilibrium Green's function (NEGF) based calculation on an atomistically defined structure, we show that such a transistor may reduce energy dissipation below the classical limit while not compromising speed - thus providing an alternate route towards ultra low-power, high-performance carbon-heterostructure electronics.

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