Theory of Magneto-elastic coupling in a ferromagnetic thin film mediated by dipolar interaction

ORAL

Abstract

Magneto-elastic coupling in magnets has been attracting significant attention. Among various microscopic mechanisms for magneto-elastic coupling, this talk focuses on the dipolar coupling between magnetostatic waves in a ferromagnetic thin film and elastic deformations at the micrometer wavelength scale. Because of the quasi-long-ranged nature of the dipolar interaction, derivation is technically nontrivial and has not been studied. In our presentation by using the Green function method, we derive the coupled equations of motion and analyze the dynamics numerically.

*We acknowledge support by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Numbers JP24KJ1109, JP23KJ0339, JP24K16987, JP22K18687, JP22H00108, and JP24H02231 and by MEXT Initiative to Establish Next-generation Novel Integrated Circuits Centers (X-NICS) Grant Number JPJ011438.

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Presenters

  • Hiroki Yoshida

    • Institute of Science Tokyo, Tokyo
    • Institute of Science Tokyo

Authors

  • Hiroki Yoshida

    • Institute of Science Tokyo, Tokyo
    • Institute of Science Tokyo

  • Ryohei Kono

    • Tokyo Institute of Technology

  • Manato Fujimoto

    • Univ of Tokyo

  • Kei Yamamoto

    • Japan Atomic Energy Agency

  • Shuichi Murakami

    • University of Tokyo
    • Univ. of Tokyo