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Measurements of the transport gap in semiconducting multiwalled carbon nanotubes with varying diameter and length

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Mtsuko, D., Koshio, A., Yudasaka, M., Iijima, S., & Ahlskog, M. (2015). Measurements of the transport gap in semiconducting multiwalled carbon nanotubes with varying diameter and length. Physical Review B, 91(19), Article 195426. https://doi.org/10.1103/PhysRevB.91.195426
Published in
Physical Review B
Authors
Mtsuko, Davie |
Koshio, A. |
Yudasaka, M. |
Iijima, S. |
Ahlskog, Markus
Date
2015
Discipline
Nanoscience CenterNanoscience Center
Copyright
© 2015 American Physical Society. Published in this repository with the kind permission of the publisher.

 
Low temperature transport in multiwalled carbon nanotubes (MWNTs) has been studied at different diameters and lengths, within 2–10 nm, and 0.3–3.5μm, respectively. In a majority of the samples, semiconductivity showed up as a transport gap in the gate voltage controlled conduction, but metallic MWNTs are found in all diameters. The transport gap is seen to be quantitatively determined by a diameter dependent band gap, and length dependent localization of charge carriers. The band gap of semiconducting MWNTs is estimated to be smaller than that extrapolated from the conventional expression applicable to semiconducting single wall carbon nanotubes. The results constitute a systematical study on size dependent transport and especially of semiconductivity in MWNTs.
Publisher
American Physical Society
ISSN Search the Publication Forum
1098-0121
Keywords
multiwalled carbon nanotubes transport gap
DOI
https://doi.org/10.1103/PhysRevB.91.195426
URI

http://urn.fi/URN:NBN:fi:jyu-201601181135

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/24747273

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