2-D localization in single wall carbon nanotube network synthesized by arc-plasma method

G. T. Kim, J. G. Park, Y. W. Park, K. Liu, G. Düsberg, S. Roth

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


Resistivity ρ(T) and magnetoresistance (MR), ((ρ(H)-ρ(H=0))/ρ(H=0), of the entangled single wall carbon nanotube (SWCN) network are studied. The temperature dependence of the resistivity shows the negative dρ/dT from T=4.2K to 300K, which fits well to the 2-dimensional variable range hopping (VRH) (ρ(T)=ρ0exp((T0/T)1/3)) formula with T0 = 259.2 K. The overall MR shows a negative H2 behavior at low magnetic field. At T≤3.8K and high magnetic field, the negative MR turns to be positive. The positive MR becomes saturating for H>10 Tesla. The negative MR with a positive upturn can be decomposed into a positive contribution from the 2-dimensional spin-dependent VRH and a negative contribution from the 2-dimensional weak localization (WL). Moreover we report the interesting chain-like ring structures found from the by-products of SWCNs synthesized by the arc-plasma method.

Original languageEnglish
Pages (from-to)2551-2554
Number of pages4
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - 1999 Jun 24
Externally publishedYes
EventProceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier
Duration: 1998 Jul 121998 Jul 18

Bibliographical note

Funding Information:
We thank to Dr. J. H. Smet and C. Albrecht, M. Burghard, J. Muster, M. S&mid, and V. Krstic at MPI, Stuttgart, and Miss M. J. Kang at the Inter-University Center for Natural Science Research Facilities in Seoul National University for their various contributions on this work. This work was jointly supported by the Korea Science and Engineering Foundation (KOSEF), Korea and the Deutsche Forschungsgemeinschaft (DFG), Germany. Partial supports for Mr. G. T. Kim were done by DAAD-KOSEF program and the European Community through the TMR contract NAMITECH, ERBFMRX-CT96-0067 (DG12-MIHT).

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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