Experimental determination and micromagnetic analysis of spin wave modes in cylindrical nanowires

Niklas Martin; Laura Álvaro-Gómez; Lucas Perez; André Thiaville; Jean-Paul Adam; Olivier Fruchart; Aurélien Masseboeuf

Experimental determination and micromagnetic analysis of spin wave modes in cylindrical nanowires

Mesoscale and Nanoscale Physics 2025-08-22 v1

Authors: Niklas Martin , Laura Álvaro-Gómez , Lucas Perez , André Thiaville , Jean-Paul Adam , Olivier Fruchart , Aurélien Masseboeuf

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Abstract

We report an experimental study of spin wave modes in individual cylindrical nanowires, a textbook situation of confined spin waves in 3D nanomagnetism. We observe discrete modes of thermal spin waves with micro-Brillouin light scattering, whose frequencies $f$ shift to higher values as the applied longitudinal induction magnetic field $B_z$ increases. Micromagnetic simulations allowed us to associate every $f(B_z)$ curve to a given spatial mode, labeled with radial and azimuthal indices $\ell$ and $m$ .

Keywords

spin wave modes cylindrical nanowires Brillouin light scattering micromagnetic simulation magnetic field dependence

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@article{arxiv.2508.15591,
  title  = {Experimental determination and micromagnetic analysis of spin wave modes in cylindrical nanowires},
  author = {Niklas Martin and Laura Álvaro-Gómez and Lucas Perez and André Thiaville and Jean-Paul Adam and Olivier Fruchart and Aurélien Masseboeuf},
  journal= {arXiv preprint arXiv:2508.15591},
  year   = {2025}
}

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8 pages, 7 figures

Experimental determination and micromagnetic analysis of spin wave modes in cylindrical nanowires

Abstract

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