Large magnetoresistance in single-walled carbon nanotubes contacted different ferromagnetic metal electrodes

doi:10.1088/1742-6596/38/1/015

Large magnetoresistance in single-walled carbon nanotubes contacted different ferromagnetic metal electrodes

Y Ohno et al 2006 J. Phys.: Conf. Ser. 38 57-60 doi: 10.1088/1742-6596/38/1/015

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Y Ohno, K Narumi, K Maehashi, K Inoue and K Matsumoto
The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
and
Japan Science and Technology Corporation, 4-1-8 Honmachi, Kawaguchi, Saitama 332-0012, Japan
E-mail: ohno@sanaken.osaka-u.ac.jp

Abstract. Magnetoresistance (MR) in single-walled carbon nanotubes (SWNTs) with different ferromagnetic source and drain electrodes (iron and cobalt) which have different coercivity was studied. Large MR ratio of 20% could be obtained at 8 K, while 1~2% small MR ratio could be observed for the sample with the same ferromagnetic source and drain electrodes of Co. The MR ratio of 20% is very close to the theoretically predicted value of 26% for Co-Fe system.

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Large magnetoresistance in single-walled carbon nanotubes contacted different ferromagnetic metal electrodes

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