Goos-Hanchen shift of inelastically scattered spin-wave beams and cascade nonlinear magnon processes.

ABSTRACT: We study, using micromagnetic simulations, the inelastic scattering of spin-wave beams on edge-localized spin-wave modes in a thin ferromagnetic film. In the splitting and confluence processes, the new spin-wave beams are generated with frequencies shifted by the edge-mode frequency. We report that inelastically scattered spin-wave beams in both processes not only change their direction of propagation but also undergo lateral shifts along the interface, analogous to the Goos-Hänchen effect known in optics. These shifts of inelastically scattered beams, for a few special cases described in the paper, can be in the range of several wavelengths, which is larger than the Goos-Hänchen shift of elastically reflected beam. Unexpectedly, at selected frequencies, we found a significant increase in

SUBMITTER: Sobucki K 

PROVIDER: S-EPMC11829016 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature