Large spin injection into single- and multi-walled carbon nanotubes

Y. Ishiwata, H. Maki, D. Tsuya, M. Suzuki, K. Ishibashi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We have investigated spin-dependent transport through CoFe-contacted single- and multi-walled carbon nanotubes (SWNT and MWNT) with the contact separation of 200 - 300 nm. At low temperature, the devices exhibit very high magnetoresistance (MR) ratios, which reach to ∼1200% for the SWNT-based system and ∼150% for the MWNT-based system. In addition, the MR characteristics show coercivity enhancement or exchange bias, depending on the properties of contacts. Another MWNT device widely shows the MR oscillation overlapped on the hysteretic change near 0 T.

Original languageEnglish
Pages (from-to)3137-3140
Number of pages4
JournalPhysica Status Solidi C: Conferences
Issue number8
Publication statusPublished - 2005
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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