Chin. Phys. Lett.  2006, Vol. 23 Issue (4): 953-955    DOI:
Original Articles |
Hopping Conductivity in a Single-Walled Carbon Nanotube Network
FANG Jing-Hai;LIU Li-Wei;KONG Wen-Jie;CAI Jian-Zhen;LU Li
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Cite this article:   
FANG Jing-Hai, LIU Li-Wei, KONG Wen-Jie et al  2006 Chin. Phys. Lett. 23 953-955
Download: PDF(386KB)  
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks
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[-(T0/T)1/2] with T0=15.8K at a wide temperature range from 4K to 300K. 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 4K. The results are explained in terms of the coherent hopping of carriers in the presence of a Coulomb gap at low temperature.
Keywords: 72.80.Rj      67.55.Hc      61.48.+c     
Published: 01 April 2006
PACS:  72.80.Rj (Fullerenes and related materials)  
  67.55.Hc  
  61.48.+c  
TRENDMD:   
URL:  
https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I4/0953
Service
E-mail this article
E-mail Alert
RSS
Articles by authors
FANG Jing-Hai
LIU Li-Wei
KONG Wen-Jie
CAI Jian-Zhen
LU Li
Related articles from Frontiers Journals
[1] PAN Rui-Qin. Diameter and Temperature Dependence of Thermal Conductivity of Single-Walled Carbon Nanotubes[J]. Chin. Phys. Lett., 2011, 28(6): 953-955
[2] WANG Lin-Jun, CAO Gang, TU Tao**, LI Hai-Ou, ZHOU Cheng, HAO Xiao-Jie, GUO Guang-Can, GUO Guo-Ping** . Ground States and Excited States in a Tunable Graphene Quantum Dot[J]. Chin. Phys. Lett., 2011, 28(6): 953-955
[3] CHEN Zhi-Dong, ZHANG Jin-Yu, YU Zhi-Ping. Numerical Analysis of Alternating-Current Small-Signal Response in Graphene Nanoribbons[J]. Chin. Phys. Lett., 2010, 27(8): 953-955
[4] CUI Guang-Lei, GU Min, YU Yao, XU Xi-Bin, WANG Li-Hang, CHENXiao, FENG Duan, TANG Tong Bor. Specific Heat of Rhombohedral Polymeric C60 in Temperature Range 300--2K[J]. Chin. Phys. Lett., 2008, 25(2): 953-955
[5] LU Hong-Yan, WANG Qiang-Hua. Electronic Raman Scattering in Graphene[J]. Chin. Phys. Lett., 2008, 25(10): 953-955
[6] PAN Rui-Qin, XU Zi-Jian, ZHU Zhi-Yuan. Length Dependence of Thermal Conductivity of Single-Walled Carbon Nanotubes[J]. Chin. Phys. Lett., 2007, 24(5): 953-955
[7] LIU Jin-Ping, XIAO Cun-Ying, HUANG Xin-Tang. Electrical Resistance Measurement of an Individual Carbon Nanotube[J]. Chin. Phys. Lett., 2005, 22(2): 953-955
[8] NIU Dong-Lin, LIU Xiao-Jun, HUANG Qiao-Jian, ZHANG Shu-Yi. Determination of Thermal Diffusivity of a Manganite Thin Film[J]. Chin. Phys. Lett., 2005, 22(10): 953-955
[9] DING Jian-Wen, YAN Xiao-Hong, LIU Chao-Ping, TANG Na-Si. Strain Induced Insulator-Metal Transition in Single Wall Carbon Nanotubes[J]. Chin. Phys. Lett., 2004, 21(4): 953-955
[10] LIU Xiao-Jun, HUANG Qiao-Jian, NIU Dong-Lin, XU Sheng, ZHANG Shu-Yi. Thermal Diffusivity of Ordered Double Perovskite A2FeMoO6 ( A = Ca, Sr and Ba)[J]. Chin. Phys. Lett., 2004, 21(11): 953-955
[11] LIU Xiao-Jun, HUANG Qiao-Jian, XU Sheng, ZHANG Shu-Yi, LUO Ai-Hua. Insulator--Metal Transition due to La Doping in Double Perovskite Sr2MnMoO6[J]. Chin. Phys. Lett., 2004, 21(1): 953-955
[12] FENG Wei, ZHOU Feng, WANG Xiao-Gong, WAN Mei-Xiang, FUJII Akihiko, YOSHINO Katsumi. Water-Soluble Multi-Walled Nanotube and its Film Characteristics[J]. Chin. Phys. Lett., 2003, 20(5): 953-955
[13] LIU Zhi-Bo, TIAN Jian-Guo, ZANG Wei-Ping, ZHOU Wen-Yuan, ZHANG Chun-Ping, ZHENG Jian-Yu, ZHOU Ying-Chun, XU Hua. Large Enhancement of Optical Nonlinearities of New Organophosphorus Fullerene Derivative [J]. Chin. Phys. Lett., 2003, 20(10): 953-955
[14] LIU Hong, DONG Jin-Ming, WAN Xian-Gang. Dependence of In-Tube Carbon Chain on the Radius and Helicity of Single-Wall Carbon Nanotubes[J]. Chin. Phys. Lett., 2002, 19(1): 953-955
[15] YANG Hua-Tong, DONG Jin-Ming, XING Ding-Yu. Electronic Localization Length of Carbon Nanotubes with Different Chiral Symmetries[J]. Chin. Phys. Lett., 2001, 18(8): 953-955
Viewed
Full text


Abstract