Low Temperature Physics: 33, 272 (2007); https://doi.org/10.1063/1.2719966 (4 pages)
Fizika Nizkikh Temperatur: Volume 33, Number 2-3 (February 2007), p. 364-368    ( to contents , go back )

Effects of electron-electron interaction in multi-walled carbon nanotubes

E.N. Tkachev, A.I. Romanenko, O.B. Anikeeva

Nonorganic Chemistry Institute of Sibirian Department of Russian Academy of Sciences, Acad. Lavrent'eva ave. 3, Novosibirsk 630090, Russia
Novosibirsk state university, street. Pirogova, 2, Novosibirsk, 630090, Russia
E-mail: b@ngs.ru

V.L. Kuznetsov, and A.N. Usol’tseva

Boreskov Institute of Catalysis Pr. akademika Lavrentieva, 5 Novosibirsk, Russia, 630090
pos Анотація:

Received September 7, 2006

Abstract

The temperature dependence of electrical conductivity, s, and the field dependence of magnetic resistivity, r, of catalytic multi-walled carbon nanotubes (MWNTs) with a low content of amorphous carbon have been studied. Below 20 K the s(T) dependences display a contribution of two dimensional quantum corrections. At T = 4,2 K the r(B) dependences exhibit a negative magnetoresistance due to the dominating contribution of quantum corrections to magnetoresistance for interacting electrons. A special method of synthetizing has made it possible to prepare MWNTs almost without any impurity of amorphous carbon. This permitted as to reveal the effects of electron–electron interaction not observed in the previous synthetized MWNTs.

73.63.–b Electronic transport in nanoscale materials and structures.

Key words: nanotubes, conductivity, quantum corrections.

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