Single Carbon Nanotube Transistor at GHz Frequency

Details Single Carbon Nanotube Transistor at GHz Frequency Single Carbon Nanotube Transistor at GHz Frequency

2008-06-02

arxiv.org/abs/0806.0227v2

Nano Letters 8, 2 (2008) 525

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We report on microwave operation of top-gated single carbon nanotube transistors. From transmission measurements in the 0.1-1.6 GHz range, we deduce device transconductance gm and gate-nanotube capacitance Cg of micro- and nanometric devices. A large and frequency-independent gm of about 20 microSiemens is observed on short devices, which meets the best dc results. The capacitance per unit gate length of 60 aF/micrometer is typical of top gates on a conventional oxide with a dielectric constant equal to 10. This value is a factor of 3-5 below the nanotube quantum capacitance which, according to recent simulations, favors high transit frequencies . For our smallest devices, we find a large transit frequency equal to 50 GHz with no evidence of saturation in length dependence.

Affiliated with

Also associated with

No associations

Rating

Single Carbon Nanotube Transistor at GHz Frequency does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Single Carbon Nanotube Transistor at GHz Frequency, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single Carbon Nanotube Transistor at GHz Frequency will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-631361