Phys. Rev. Lett. 89, 106801 (2002) [4 pages]Carbon Nanotubes as Schottky Barrier TransistorsReceived 16 March 2002; published 15 August 2002 We show that carbon nanotube transistors operate as unconventional “Schottky barrier transistors,” in which transistor action occurs primarily by varying the contact resistance rather than the channel conductance. Transistor characteristics are calculated for both idealized and realistic geometries, and scaling behavior is demonstrated. Our results explain a variety of experimental observations, including the quite different effects of doping and adsorbed gases. The electrode geometry is shown to be crucial for good device performance. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.106801
DOI:
10.1103/PhysRevLett.89.106801
PACS:
73.63.Fg, 73.40.Cg
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