Low Bias Electron Scattering in Structure-Identified Single Wall Carbon Nanotubes: Role of Substrate Polar Phonons

    Authors

    B. Chandra; V. Perebeinos; S. Berciaud; J. Katoch; M. Ishigami; P. Kim; T. F. Heinz;J. Hone

    Comments

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    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    TRANSPORT; Physics, Multidisciplinary

    Abstract

    We have performed temperature-dependent electrical transport measurements on known structure single wall carbon nanotubes at low bias. The experiments show a superlinear increase in nanotube resistivity with temperature, which is in contradiction with the linear dependence expected from nanotube acoustic-phonon scattering. The measured electron mean free path is also much lower than expected, especially at medium to high temperatures ( > 100 K). A theoretical model that includes scattering due to surface polar phonon modes of the substrates reproduces the experiments very well. The role of surface phonons is further confirmed by resistivity measurements of nanotubes on aluminum nitride.

    Journal Title

    Physical Review Letters

    Volume

    107

    Issue/Number

    14

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000295328200009

    ISSN

    0031-9007

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