Continuous dc Spinmotive Force in a Patterned Ferromagnetic Film

ORAL

Abstract

Recently, a motive force of spin origin, i.e., a ``spinmotive force", has been theoretically predicted[1] and experimentally observed[2,3]. A spinmotive force reflects the spin of electrons in an essential manner and is a new concept relevant to electronic devices. However, problems remain, one of which is the continuous generation of such a spinmotive force. In this study, we present experiment and theory that demonstrate the continuous generation of a dc spinmotive force by exciting a ferromagnetic resonance of a single comb-shaped ferromagnetic thin film[4]. Experimental results are well reproduced by theoretical calculations, offering a quantitative and microscopic understanding of this spinmotive force. \newline [1] S. Barnes and S. Maekawa, PRL 98, 246601 (2007). [2] S. A. Yang et al. PRL 102, 067201 (2009). [3] P. N. Hai et al. Nature 458, 489 (2009). [4] Y. Yamane, K. Sasage et al., to appear in PRL.

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Authors

  • Yuta Yamane

    • Advanced Science Research Center, Japan Atomic Energy Agency and Institute for Materials Research, Tohoku University

  • Kohei Sasage

    • Institute for Materials Research, Tohoku University and CREST, Japan Science and Technology Agency, Japan

  • Toshu An

    • Institute for Materials Research, Tohoku University and CREST, Japan Science and Technology Agency, Japan

  • Kazuya Harii

    • Institute for Materials Research, Tohoku University and CREST, Japan Science and Technology Agency, Japan

  • Jun-ichiro Ohe

    • CREST, Japan Science and Technology Agency and Dept of Physics, Toho University

  • Jun'ichi Ieda

    • Advanced Science Research Center, JAEA, and CREST, Japan Science and Technology Agency

  • Stewart Barnes

    • Physics Department, University of Miami

  • Eiji Saitoh

    • Advanced Science Research Center, JAEA; Institute for Materials Research, Tohoku University; and CREST, Japan Science and Technology Agency

  • Sadamichi Maekawa

    • Advanced Science Research Center, Japan Atomic Energy Agency and CREST, Japan Science and Technology Agency