Spin Transport in Multi Wall Carbon Nanotubes with Co Electrodes

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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