Two-magnon scattering in the framework of the Lippmann-Schwinger equation
Mesoscale and Nanoscale Physics
2026-07-29 v1 Materials Science
Applied Physics
Abstract
Controlling magnetic losses requires identifying the microscopic origin of extrinsic linewidth broadening. We introduce a Lippmann--Schwinger framework for two-magnon scattering from weak defect potentials, showing that scattering is set by the overlap between the perturbation of the effective field and degenerate spin-wave states. Applied to iron garnet films, YIG/GGG(111) and YIG/GGG(110), we identify crystallographic directions along which these perturbation are elongated. This approach provides a link between the crystallography, effective field on the sample scale and two-magnon scattering.
Keywords
Cite
@article{arxiv.2607.26974,
title = {Two-magnon scattering in the framework of the Lippmann-Schwinger equation},
author = {Jorge Marquez Chavez and Ondřej Wojewoda and Yixuan Song and Geoffrey S. D. Beach and Caroline A. Ross},
journal= {arXiv preprint arXiv:2607.26974},
year = {2026}
}