AI Article Synopsis
- The research explores how spin-polarized currents interact with magnetization dynamics to create black-hole and white-hole horizons for magnons, which are the basic units of oscillation in magnetization.
- Three types of materials are examined: easy-plane ferromagnetic metals, isotropic antiferromagnetic metals, and easy-plane magnetic insulators, where the theoretical framework is supported by existing experimental data.
- The study suggests that the Hawking temperature in these systems can reach up to 1 K and discusses the potential impacts of magnonic horizons on spin-wave scattering, transport experiments, and magnon entanglement.
Article Abstract
We show that the interaction between the spin-polarized current and the 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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| http://dx.doi.org/10.1103/PhysRevLett.118.061301 | DOI Listing |
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