Microwave conductance spectra of single-walled carbon nanotube arrays

Highstrete, Clark; Lee, Mark; Talin, A. Alec; Vance, Andrew L.
November 2009
Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p203111
Academic Journal
Complex conductance spectra of single-walled carbon nanotube (SWCNT) arrays have been measured from 0.1 to 50 GHz at temperatures between 4 and 293 K. Using purely capacitive contacts to separate contact effects from the NTs’ response, the intrinsic SWCNT array conductance increased with frequency as fs with exponent s=0.67±0.08 regardless of array size and temperature. The spectra are consistent with the behavior found in many strongly inhomogeneous electronic systems. The origin of disorder in these arrays is likely topological rather than energetic.


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