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

Authors
Kim, KanghyunJang, DoyoungLee, KanghoKang, HaeyongYu, Byung YongLee, Jung IlKim, Gyu Tae
Issue Date
20-8월-2010
Publisher
IOP PUBLISHING LTD
Keywords
nanotube; noise
Citation
NANOTECHNOLOGY, v.21, no.33
Indexed
SCIE
SCOPUS
Journal Title
NANOTECHNOLOGY
Volume
21
Number
33
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/115868
DOI
10.1088/0957-4484/21/33/335702
ISSN
0957-4484
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 S-I proportional to R-4.8, 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.
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공과대학 (전기전자공학부)
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