Chin. Phys. Lett.  2006, Vol. 23 Issue (10): 2852-2855    DOI:
Original Articles |
Spin Transport in Multi Wall Carbon Nanotubes with Co Electrodes
WANG Tian-Xing1;WEI Hong-Xiang1;HAN Xiu-Feng1;R. M. Langford2;Martin Thornton2;M. A. Bari2;J. M. D. Coey2
1State Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 2Department of Physics, Trinity College, Dublin 2, Ireland
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WANG Tian-Xing, WEI Hong-Xiang, HAN Xiu-Feng et al  2006 Chin. Phys. Lett. 23 2852-2855
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Abstract The magnetic field dependent transport behaviour of Co contacted multi-wall nanotubes is investigated. A sample with three Co electrodes has been measured by two-channel method with an in-plane magnetic field. When the in-plane magnetic field is perpendicular to the tube, high positive magnetoresistance up to 30% is btained at low temperature from 3K to 25K and with field parallel to the tube, negative magnetoresistance up to 15% is observed only from the high resistance junction. The detailed positive and negative magnetoresistance behaviour also changes with temperature.
Keywords: 73.63.Fg      85.35.Kt      75.47.-m      72.25.Mk     
Published: 01 October 2006
PACS:  73.63.Fg (Nanotubes)  
  85.35.Kt (Nanotube devices)  
  75.47.-m (Magnetotransport phenomena; materials for magnetotransport)  
  72.25.Mk (Spin transport through interfaces)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I10/02852
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WANG Tian-Xing
WEI Hong-Xiang
HAN Xiu-Feng
R. M. Langford
Martin Thornton
M. A. Bari
J. M. D. Coey
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