Electronic and Magnetic Structures in Slab Models Including Al/Co and O/Co Interfaces

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概要

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• On the basis of the density-functional theory, we numerically calculated the interfacial magnetism of slab models including Al/Co and O/Co interfaces. We obtained the local magnetic moments and spin polarizations for various types of models. We found that the interfacial Al layers exhibit positive spin polarizaition in specific atomic arrangements, such as O/Al/Co. The sign is consistent with the experimental result of the ferromagnet/insulator/superconductor junction. This result suggests that in the junction Co/Al2O3/Co, the tunneling of $s$-character electrons in Al is favored to that of $d$-character electrons in Co.

• Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
• 2001-07-15

著者

• Onogi Toshiyuki

  Advanced Research Laboratory Hitachi Ltd.

• Ichimura Masahiko

  Advanced Research Laboratory Hitachi Ltd.

• Hayakawa Jun

  Central Research Laboratory Hitachi Ltd.

• Onogi Toshiyuki

  Advanced Research Laboratory, Hitachi Ltd., Hatoyama, Saitama 350-0395, Japan

• Ichimura Masahiko

  Advanced Research Laboratory, Hitachi Ltd., Hatoyama, Saitama 350-0395, Japan

• Itoh Kenchi

  Central Research Laboratory, Hitachi Ltd., Kokubunji, Tokyo 185-8601, Japan

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