Influence of electrical contacts on the 1/f noise in individual multi-walled carbon nanotubes

Title
Influence of electrical contacts on the 1/f noise in individual multi-walled carbon nanotubes
Authors
김강현장도영이강호강해영유병용이정일김규태
Keywords
1/f noise; CNT; electrical conteact; low-frequency
Issue Date
2010-08
Publisher
Nanotechnology
Citation
VOL 21, NO 33, 335702-1-335702-4
Abstract
Low-frequency noise of individual MWNTs was investigated with different metal electrodes. Irrespective of the ohmic or non-ohmic voltage–current characteristics, a strong dependence of the noise on the metal contacts was observed. The good electrical contacts with Pd or Pt electrodes enable a quasi-ballistic transport with a bigger exponent in the relation of SI ∝ R4.8, similar to 2D metallic film or graphene. On the other hand, the noise in the case of Cr or Ti electrodes is almost linear with the resistance of the nanotubes, which may be an index of the influence of the contacts in the CNTs.
URI
http://pubs.kist.re.kr/handle/201004/39079
ISSN
0957-4484
Appears in Collections:
KIST Publication > Article
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