Giant tunnel magnetoresistance in codeposited fullerene-cobalt films in the low bias-voltage regime

Sakai, Seiji; Sugai, Isamu; Mitani, Seiji*; Takanashi, Koki; Matsumoto, Yoshihiro; Naramoto, Hiroshi*; Avramov, P.; Okayasu, Satoru ; Maeda, Yoshihito

Magnetotransport properties in the low bias-voltage regime were investigated for co-deposited C $_{60}$ -Co films. A giant tunnel magnetoresistance (MR) ratio (/ $_{max}$ ) of 80%, which is the highest in ferromagnetic metal/organic molecule systems, was found at low temperatures. The observed bias-voltage dependence of the MR ratio is expressed by an unusual exponential form, suggesting that the MR ratio of nearly 100% can be realized in the low bias-voltage limit.

Language	:	English
Journal	:	Applied Physics Letters
Volume	:	91
Number	:	24
Pages	:	p.242104_1 - 242104_3
Publication Year/Month	:	2007/12
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Paper URL	:	https://doi.org/10.1063/1.2822397
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Registration No. : AA20070842
JAEA Abstracts No. : 36000524
Paper Submission No. : 3787

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