Measurements of the transport gap in semiconducting multiwalled carbon nanotubes with varying diameter and length
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
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Physical Review BDate
2015Copyright
© 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.
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American Physical SocietyISSN Search the Publication Forum
1098-0121Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/24747273
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