Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2337863
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This letter reports measurements of microwave (up to 4.5 GHz) detection in metallic single walled carbon nanotubes. The measured voltage responsivity was found to be 114 V/W at 77 K. The authors also demonstrated heterodyne detection at 1 GHz. The detection mechanism can be explained based on standard microwave detector theory and the nonlinearity of the dc IV curve. The authors discuss the possible causes of this nonlinearity. While the frequency response is limited by circuit parasitics in this measurement, the authors discuss evidence that indicates that the effect is much faster and that applications of carbon nanotubes as terahertz detectors are feasible. (c) 2006 American Institute of Physics.
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