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Electrical resistance of a carbon nanotube bundle

Published online by Cambridge University Press:  03 March 2011

L. Langer ,
L. Stockman ,
J. P. Heremans ,
V. Bayot ,
C. H. Olk ,
C. Van Haesendonck ,
Y. Bruynseraede  and
J-P. Issi
L. Langer
Affiliation:
Unité de Physico-Chimie et de Physique des Matériaux, Université Catholique de Louvain, 1 Place Croix du Sud, B-1348 Louvain-la-Neuve, Belgique
L. Stockman
Affiliation:
Laboratorium voor Vaste Stof-Fysika en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgique
J. P. Heremans
Affiliation:
Physics Department, General Motors Research, Warren, Michigan 48090
V. Bayot
Affiliation:
Unité de Physico-Chimie et de Physique des Matériaux, Université Catholique de Louvain, 1 Place Croix du Sud, B-1348 Louvain-la-Neuve, Belgique
C. H. Olk
Affiliation:
Physics Department, General Motors Research, Warren, Michigan 48090
C. Van Haesendonck
Affiliation:
Laboratorium voor Vaste Stof-Fysika en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgique
Y. Bruynseraede
Affiliation:
Laboratorium voor Vaste Stof-Fysika en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgique
J-P. Issi
Affiliation:
Unité de Physico-Chimie et de Physique des Matériaux, Université Catholique de Louvain, 1 Place Croix du Sud, B-1348 Louvain-la-Neuve, Belgique
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The first direct electrical resistance measurements performed on a single carbon nanotube bundle from room temperature down to 0.3 K and in magnetic fields up to 14 T are reported. From the temperature dependence of the resistance above 2 K, it is shown that some nanotubes exhibit a semimetallic behavior akin to rolled graphene sheets with a similar band structure, except that the band overlap, Δ ≈ 3.7 meV, is about 10 times smaller than for crystalline graphite. In contrast to graphite which shows a constant low-temperature resistivity, the nanotubes exhibit a striking increase of the resistance followed by a broad maximum at very low temperatures. A magnetic field applied perpendicular to the sample axis decreases the resistance. Above 1 K, this behavior is consistent with the formation of Landau levels. At lower temperatures, the resistance shows an unexpected drop at a critical temperature which increases linearly with magnetic field. These striking features could be related to the unique quasi-one-dimensional structure of the carbon nanotubes.

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Articles
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Journal of Materials Research , Volume 9 , Issue 4 , April 1994 , pp. 927 - 932
Copyright
Copyright © Materials Research Society 1994

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References

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