X-ray absorption spectroscopy and magnetic circular dichroism in codeposited C60-Co films with giant tunnel magnetoresistance

Yoshihiro Matsumoto, Seiji Sakai, Yasumasa Takagi, Takeshi Nakagawa, Toshihiko Yokoyama, Toshihiro Shimada, Seiji Mitani, Hiroshi Naramoto, Yoshihito Maeda

研究成果: Contribution to journalArticle査読

17 被引用数 (Scopus)

抄録

Electronic and spin states of the codeposited C60-Co films with large tunnel magnetoresistance (TMR) effect were investigated with the X-ray absorption and magnetic circular dichroism (MCD) spectroscopies. It is revealed that a C60-Co compound generated in the C60-Co films shows the clear MCD signal attributed to the spin-polarized Co 3d states hybridized with C60 π orbitals. The magnetic response of these Co 3d-derived states agrees well with temperature dependence of the observed MR ratios of the granular C60-Co films. This suggests the incorporation of the spin-polarized Co 3d-derived states of the C60-Co compound into the observed TMR effect.

本文言語英語
ページ(範囲)244-248
ページ数5
ジャーナルChemical Physics Letters
470
4-6
DOI
出版ステータス出版済み - 3 5 2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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