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arXiv · 1610.02313

Magnonic black holes

A. Roldán-Molina·A. S. Nunez·R. A. Duine
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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.

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A. Roldán-Molina, A. S. Nunez, R. A. Duine. 2016-10-07. Magnonic black holes. https://doi.org/10.1103/physrevlett.118.061301

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