We report a theory for the coherent and incoherent chiral pumping of spin waves into thin magnetic films through the dipolar coupling with a local magnetic transducer, such as a nanowire. The ferromagnetic resonance of the nanowire is broadened by the injection of unidirectional spin waves that generate a non-equilibrium magnetization in only half of the film. A temperature gradient between the local magnet and film leads to a unidirectional flow of incoherent magnons, i.e., a chiral spin Seebeck effect.
@article{arxiv.1908.09141,
title = {Chiral Pumping of Spin Waves},
author = {Tao Yu and Yaroslav M. Blanter and Gerrit E. W. Bauer},
journal= {arXiv preprint arXiv:1908.09141},
year = {2019}
}