Electrical properties of ferromagnetic semiconducting single-walled carbon nanotubes

Y. F. Li, R. Hatakeyama, T. Kaneko, T. Izumida, T. Okada, T. Kato

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


Electrical properties of single-walled carbon nanotubes (SWCNTs) filled with Fe are studied by fabricating them as the channels of field-effect transistor devices. The synthesis of Fe-filled SWCNTs is realized by using ferrocene as the starting material. Our results reveal that ferrocene-filled SWCNTs show the interesting ambipolar behavior. In contrast, Fe-filled SWCNTs can exhibit high performance unipolar n-type semiconducting characteristics, suggesting the possibility of creating ferromagnetic semiconducting SWCNTs. Moreover, Coulomb blockade oscillations are significantly observed on Fe-filled SWCNTs, which indicates that they exhibit excellent single-electron transistor characteristics at low temperatures.

Original languageEnglish
Article number083117
JournalApplied Physics Letters
Issue number8
Publication statusPublished - 2006


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