Giant magneto-conductance in twisted carbon nanotubes

Details Giant magneto-conductance in twisted carbon nanotubes Giant magneto-conductance in twisted carbon nanotubes

2002-02-22

arxiv.org/abs/cond-mat/0202398v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 2 figures

Scientific paper

10.1209/epl/i2002-00161-8

Using the Landauer-Buttiker 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 pi 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.

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