Magnonic black holes
Mesoscale and Nanoscale Physics
2017-02-15 v1
Abstract
We show that the interaction between spin-polarized current and magnetization dynamics can be used to implement black-hole and white-hole horizons for magnons - the quanta of oscillations in the magnetization direction in magnets. We consider three different systems: easy-plane ferromagnetic metals, isotropic antiferromagnetic metals, and easy-plane magnetic insulators. Based on available experimental data, we estimate that the Hawking temperature can be as large as 1 K. We comment on the implications of magnonic horizons for spin-wave scattering and transport experiments, and for magnon entanglement.
Keywords
Cite
@article{arxiv.1610.02313,
title = {Magnonic black holes},
author = {A. Roldán-Molina and A. S. Nunez and R. A. Duine},
journal= {arXiv preprint arXiv:1610.02313},
year = {2017}
}
Comments
6 pages, 1 figure