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

Gyu-Tae Kim, J. G. Park, Y. W. Park, K. Liu, G. Düsberg, S. Roth

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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)=ρ 0exp((T 0/T) 1/3)) formula with T 0 = 259.2 K. The overall MR shows a negative H 2 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
Volume103
Issue number1-3
DOIs
Publication statusPublished - 1999 Jun 24
Externally publishedYes

Fingerprint

Carbon Nanotubes
Magnetoresistance
plasma jets
Carbon nanotubes
carbon nanotubes
Plasmas
dependent variables
electrical resistivity
ring structures
magnetic fields
temperature dependence
Magnetic fields
Single-walled carbon nanotubes (SWCN)
Byproducts
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

2-D localization in single wall carbon nanotube network synthesized by arc-plasma method. / Kim, Gyu-Tae; Park, J. G.; Park, Y. W.; Liu, K.; Düsberg, G.; Roth, S.

In: Synthetic Metals, Vol. 103, No. 1-3, 24.06.1999, p. 2551-2554.

Research output: Contribution to journalArticle

Kim, Gyu-Tae ; Park, J. G. ; Park, Y. W. ; Liu, K. ; Düsberg, G. ; Roth, S. / 2-D localization in single wall carbon nanotube network synthesized by arc-plasma method. In: Synthetic Metals. 1999 ; Vol. 103, No. 1-3. pp. 2551-2554.
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