An asymptotically exact theory of spectrum and transverse distribution of magnetization in long-wave magnons is presented. It is based on exact analytical solution of linearized Landau-Lifshitz equation in a film. The quantization of the transverse wave parameters and wave vectors is studied.
@article{arxiv.1710.05362,
title = {Long-wave magnons in a ferromagnetic film},
author = {Gang Li and Chen Sun and Thomas Nattermann and Valery L. Pokrovsky},
journal= {arXiv preprint arXiv:1710.05362},
year = {2018}
}