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Peer-reviewedCC BY 4.0Physical Review Applied

Micromagnetic modeling of surface acoustic wave—driven dynamics: Interplay of strain, magnetorotation, and magnetic anisotropy

  • Florian Millo
  • Pauline Rovillain
  • Massimiliano Marangolo
  • Daniel Stoeffler
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Abstract

We study the coupling mechanism of surface acoustic waves (SAW) with spin waves (SW) using micromagnetic analysis. The SAW magnetoacoustic excitation field is fully implemented, i.e., all strain and lattice rotation terms are included. A realistic CoFeB film with a weak in-plane uniaxial anisotropy is considered. We investigate the conditions for efficient SAW-SW coupling, with particular emphasis on the case where the SAW propagates parallel to the external magnetic field, a configuration of special interest for magnonic applications. Remarkably, we find that the anisotropy orientation serves as a knob to tune the parallel resonant interaction. Overall, this work provides a unified and practical picture of SAW-SW coupling in thin magnetized films.

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Cite

BibTeXRIS
BibTeX
@article{millo2026micromagnetic,
  title = {{Micromagnetic modeling of surface acoustic wave—driven dynamics: Interplay of strain, magnetorotation, and magnetic anisotropy}},
  author = {Florian Millo and Pauline Rovillain and Massimiliano Marangolo and Daniel Stoeffler},
  journal = {Physical Review Applied},
  year = {2026},
  month = aug,
  doi = {10.1103/7v5p-h1f4},
  eprint = {2603.20106},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05726047v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Micromagnetic modeling of surface acoustic wave—driven dynamics: Interplay of strain, magnetorotation, and magnetic anisotropy
AU  - Florian Millo
AU  - Pauline Rovillain
AU  - Massimiliano Marangolo
AU  - Daniel Stoeffler
PY  - 2026
DA  - 2026/08/14
JO  - Physical Review Applied
DO  - 10.1103/7v5p-h1f4
UR  - https://hal.science/hal-05726047v1
AB  - We study the coupling mechanism of surface acoustic waves (SAW) with spin waves (SW) using micromagnetic analysis. The SAW magnetoacoustic excitation field is fully implemented, i.e., all strain and lattice rotation terms are included. A realistic CoFeB film with a weak in-plane uniaxial anisotropy is considered. We investigate the conditions for efficient SAW-SW coupling, with particular emphasis on the case where the SAW propagates parallel to the external magnetic field, a configuration of special interest for magnonic applications. Remarkably, we find that the anisotropy orientation serves as a knob to tune the parallel resonant interaction. Overall, this work provides a unified and practical picture of SAW-SW coupling in thin magnetized films.
SN  - 2331-7019
ER  -