Disentangling intrinsic and extrinsic Gilbert damping

Magnetic damping is of great interest due to its importance in magnetization switching and dynamics. Here, we report the quantitative disentanglement of intrinsic and extrinsic Gilbert damping in epitaxial Fe thin films. Both intrinsic damping and two-magnon scattering (TMS) make significant contributions to the total Gilbert damping, leading to an enhanced total damping at low temperature. Our result suggests the correlation between interfacial magnetic anisotropy and TMS.

Automated summary

The study reveals that both intrinsic damping and two-magnon scattering make significant contributions to the total Gilbert damping in epitaxial Fe thin films, leading to an enhanced total damping at low temperature. The results suggest a correlation between interfacial magnetic anisotropy and two-magnon scattering.