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

Seiji Sakai, Isamu Sugai, Seiji Mitani, Koki Takanashi, Yoshihiro Matsumoto, Hiroshi Naramoto, Pavel V. Avramov, Satoru Okayasu, Yoshihito Maeda

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Magnetotransport properties in the low bias-voltage regime were investigated for codeposited C60 -Co films. A giant tunnel magnetoresistance (MR) ratio (ΔR Rmax) 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.

Original languageEnglish
Article number242104
JournalApplied Physics Letters
Volume91
Issue number24
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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