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Current-conducting properties of paper consisting of multiwall carbon nanotubes |
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| Authors: | E N Tkachev T I Buryakov V L Kuznetsov S I Moseenkov I N Mazov S I Popkov K A Shaikhutdinov |
| Institution: | 1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia 2. Siberian Physicotechnical Institute, Tomsk State University, Novosobornaya pl. 1, Tomsk, 634050, Russia 3. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia 4. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia |
| Abstract: | 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 = constT ?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. |
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