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

^*此作品的通讯作者

CAS - Institute of Physics

科研成果: 期刊稿件 › 文章 › 同行评审

4 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	953-955
页数	3
期刊	Chinese Physics Letters
卷	23
期	4
DOI	https://doi.org/10.1088/0256-307X/23/4/053
出版状态	已出版 - 1 4月 2006
已对外发布	是

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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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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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