Hopping conductivity in a single-walled carbon nanotube network

Jing Hai Fang; Li Wei Liu; Wen Jie Kong; Jian Zhen Cai; Li Lu

doi:10.1088/0256-307X/23/4/053

Hopping conductivity in a single-walled carbon nanotube network

Jing Hai Fang^*, Li Wei Liu, Wen Jie Kong, Jian Zhen Cai, Li Lu

^*Corresponding author for this work

CAS - Institute of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We investigate the resistance and magnetoresistance (MR) of an entangled single-walled carbon nanotube (SWNT) network. The temperature dependence of conductance is fitted by formula G(T) ≤ G₀exp[-(T ₀/T)^1/2] with T₀ ≤ 15.8 K at a wide temperature range from 4 K to 300 K. The MR defined by [R(T,H)-R(T,0)]/R(T,0) as a function of temperature and magnetic field perpendicular to the tube axis is negative at low temperatures. The MR amplitude increases as the temperature decreases at relative high temperature, but becomes decrease when temperature below 4 K. The results are explained in terms of the coherent hopping of carriers in the presence of a Coulomb gap at low temperature.

Original language	English
Pages (from-to)	953-955
Number of pages	3
Journal	Chinese Physics Letters
Volume	23
Issue number	4
DOIs	https://doi.org/10.1088/0256-307X/23/4/053
Publication status	Published - 1 Apr 2006
Externally published	Yes

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title = "Hopping conductivity in a single-walled carbon nanotube network",

abstract = "We investigate the resistance and magnetoresistance (MR) of an entangled single-walled carbon nanotube (SWNT) network. The temperature dependence of conductance is fitted by formula G(T) ≤ G0exp[-(T 0/T)1/2] with T0 ≤ 15.8 K at a wide temperature range from 4 K to 300 K. The MR defined by [R(T,H)-R(T,0)]/R(T,0) as a function of temperature and magnetic field perpendicular to the tube axis is negative at low temperatures. The MR amplitude increases as the temperature decreases at relative high temperature, but becomes decrease when temperature below 4 K. The results are explained in terms of the coherent hopping of carriers in the presence of a Coulomb gap at low temperature.",

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T1 - Hopping conductivity in a single-walled carbon nanotube network

AU - Fang, Jing Hai

AU - Liu, Li Wei

AU - Kong, Wen Jie

AU - Cai, Jian Zhen

AU - Lu, Li

PY - 2006/4/1

Y1 - 2006/4/1

N2 - We investigate the resistance and magnetoresistance (MR) of an entangled single-walled carbon nanotube (SWNT) network. The temperature dependence of conductance is fitted by formula G(T) ≤ G0exp[-(T 0/T)1/2] with T0 ≤ 15.8 K at a wide temperature range from 4 K to 300 K. The MR defined by [R(T,H)-R(T,0)]/R(T,0) as a function of temperature and magnetic field perpendicular to the tube axis is negative at low temperatures. The MR amplitude increases as the temperature decreases at relative high temperature, but becomes decrease when temperature below 4 K. The results are explained in terms of the coherent hopping of carriers in the presence of a Coulomb gap at low temperature.

AB - We investigate the resistance and magnetoresistance (MR) of an entangled single-walled carbon nanotube (SWNT) network. The temperature dependence of conductance is fitted by formula G(T) ≤ G0exp[-(T 0/T)1/2] with T0 ≤ 15.8 K at a wide temperature range from 4 K to 300 K. The MR defined by [R(T,H)-R(T,0)]/R(T,0) as a function of temperature and magnetic field perpendicular to the tube axis is negative at low temperatures. The MR amplitude increases as the temperature decreases at relative high temperature, but becomes decrease when temperature below 4 K. The results are explained in terms of the coherent hopping of carriers in the presence of a Coulomb gap at low temperature.

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DO - 10.1088/0256-307X/23/4/053

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SN - 0256-307X

VL - 23

SP - 953

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JO - Chinese Physics Letters

JF - Chinese Physics Letters

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Hopping conductivity in a single-walled carbon nanotube network

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