We report an experimental study of spin-wave modes in individual cylindrical nanowires, a textbook situation of confined spin waves in three-dimensional nanomagnetism. We observe discrete modes of thermal spin waves with microfocused 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 $f\left(B_z\right)$ curve to a given spatial mode, labeled with radial and azimuthal indices $\ell$ and $m$.

Close

PrevNext

View figure in article

• Magnetization dynamics
• Spin waves
• Nanowires
• Brillouin scattering & spectroscopy
• Micromagnetic modeling
• Spin wave theory