Electronic properties of graphite nanotubules from galvanomagnetic effects

S. N. Song; X. K. Wang; Robert P. H. Chang; J. B. Ketterson

doi:10.1103/PhysRevLett.72.697

Electronic properties of graphite nanotubules from galvanomagnetic effects

S. N. Song, X. K. Wang, Robert P. H. Chang, J. B. Ketterson

Northwestern University

Research output: Contribution to journal › Article › peer-review

204 Citations (Scopus)

Abstract

We have measured the magnetoresistance (MR) and Hall coefficient of state-of-the-art graphite nanotubule bundles. The apparent Hall coefficient is positive in the temperature and field ranges studied. At low temperatures, the conductivity shows two dimensional weak localization behavior and the MR is negative; above 60 K and MR is positive and increases approximately linearly with temperature, which is mainly due to an increase in the carrier concentration. The results show that a bundle of graphite nanotubules may best be described as a semimetal.

Original language	English
Pages (from-to)	697-700
Number of pages	4
Journal	Physical Review Letters
Volume	72
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.72.697
Publication status	Published - 1994

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "We have measured the magnetoresistance (MR) and Hall coefficient of state-of-the-art graphite nanotubule bundles. The apparent Hall coefficient is positive in the temperature and field ranges studied. At low temperatures, the conductivity shows two dimensional weak localization behavior and the MR is negative; above 60 K and MR is positive and increases approximately linearly with temperature, which is mainly due to an increase in the carrier concentration. The results show that a bundle of graphite nanotubules may best be described as a semimetal.",

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AB - We have measured the magnetoresistance (MR) and Hall coefficient of state-of-the-art graphite nanotubule bundles. The apparent Hall coefficient is positive in the temperature and field ranges studied. At low temperatures, the conductivity shows two dimensional weak localization behavior and the MR is negative; above 60 K and MR is positive and increases approximately linearly with temperature, which is mainly due to an increase in the carrier concentration. The results show that a bundle of graphite nanotubules may best be described as a semimetal.

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