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Differential current amplification in three-terminal Y-junction carbon nanotube devices

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6 Author(s)
Perkins, B.R. ; Division of Engineering and Department of Physics, Brown University, Providence, Rhode Island 02912 ; Wang, D.P. ; Soltman, D. ; Yin, A.J.
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We present three-terminal transistor-like operation of Y-junction carbon nanotubes with three independent contacts. Using one of the terminals as a controlling gate, differential current gain of up to 300 is observed at low temperature (4.2 K) in the biasing region where the gate current is small. We present evidence that the observed transistor characteristics can be ascribed to a new amplification mechanism: gated hopping via conducting grains.

Published in:

Applied Physics Letters  (Volume:87 ,  Issue: 12 )