Issue |
Europhys. Lett.
Volume 59, Number 1, July 2002
|
|
---|---|---|
Page(s) | 75 - 80 | |
Section | Condensed matter: structure, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2002-00161-8 | |
Published online | 01 June 2002 |
Giant magneto-conductance in twisted carbon nanotubes
1
Department of Physics, Lancaster University -
Lancaster, LA1 4YB, UK
2
Department of Physics and Astronomy and
Center for Fundamental Materials Research
Michigan State University - East Lansing, MI 48824-1116, USA
Received:
12
December
2001
Accepted:
4
April
2002
Using the Landauer-Büttiker formalism, we calculate the effect of structural twist on electron transport in conducting carbon nanotubes. We demonstrate that even a localized region of twist scatters the propagating π electrons and induces the opening of a (pseudo-) gap near the Fermi level. The subsequent conductance reduction may be compensated by an applied axial magnetic field, leading to a twist-induced, giant positive magneto-conductance in clean armchair nanotubes.
PACS: 61.48.+c – Fullerenes and fullerene-related materials / 72.80.Rj – Electronic transport: fullerenes and related materials / 73.61.Wp – Electronic structure: fullerenes and related materials
© EDP Sciences, 2002
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