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

doi:10.1016/j.cplett.2009.01.032

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: ジャーナルへの寄稿 › 学術誌 › 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
巻	470
号	4-6
DOI	https://doi.org/10.1016/j.cplett.2009.01.032
出版ステータス	出版済み - 3月 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

文献へのアクセス

10.1016/j.cplett.2009.01.032

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引用スタイル

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abstract = "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.",

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

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AU - Matsumoto, Yoshihiro

AU - Sakai, Seiji

AU - Takagi, Yasumasa

AU - Nakagawa, Takeshi

AU - Yokoyama, Toshihiko

AU - Shimada, Toshihiro

AU - Mitani, Seiji

AU - Naramoto, Hiroshi

AU - Maeda, Yoshihito

PY - 2009/3/5

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N2 - 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.

AB - 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.

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