High Spin-Wave Propagation Length Consistent with Low Damping in a Metallic Ferromagnet

Luis Flacke, Lukas Liensberger, Matthias Althammer +11

We report ultra-low intrinsic magnetic damping in Co${}_{\text{25}}$Fe${}_{\text{75}}$ heterostructures, reaching the low $10^{-4}$ regime at room temperature. By using a broadband fer…