Current-conducting properties of paper consisting of multiwall carbon nanotubes

• Published in: Journal of experimental and theoretical physics 2013-05, Vol.116 (5), p.860-865
• Main Authors: Tkachev, E. N., Buryakov, T. I., Kuznetsov, V. L., Moseenkov, S. I., Mazov, I. N., Popkov, S. I., Shaikhutdinov, K. A.
• Format: Article
• Language: English
• Subjects: CARBON NANOTUBES; Classical and Quantum Gravitation; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CORRECTIONS; ELECTRIC CONDUCTIVITY; Electric properties; Electrical conductivity; Electronic Properties of Solid; ELECTRONS; Elementary Particles; MAGNETIC FIELDS; Nanotubes; Particle and Nuclear Physics; Physics; Physics and Astronomy; Quantum Field Theory; QUANTUM MECHANICS; Relativity Theory; Solid State Physics; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; TWO-DIMENSIONAL CALCULATIONS; WAVE FUNCTIONS
• ISSN: 1063-7761; 1090-6509
• DOI: 10.1134/S1063776113050257

Electrical conductivity σ( T ) of the paper consisting of multiwalled carbon nanotubes (MWCNTs) is studied in the temperature range 4.2-295 K, and its magnetoresistivity ρ( B ) at various temperatures in magnetic fields up to 9 T is analyzed. The temperature dependence of the paper electrical conductivity σ( T ) exhibits two-dimensional quantum corrections to the conductivity below 10 K. The dependences of negative magnetoresistivity ρ( B ) measured at various temperatures are used to estimate the wavefunction phase breakdown length L ϕ of conduction electrons and to obtain the temperature dependence L ϕ = const T − p /2 , where p ≈ 1/3. Similar dependences of electrical conductivity σ( T ), magnetoresistivity ρ( B ), and phase breakdown length L ϕ ( T ) are detected for the initial MWCNTs used to prepare the paper.