Articulo
Magnonic Black Holes
Physical Review B
Registro en:
1150072
1150072
Autor
Roldán-Molina, Alejandro
Núñez-Vásquez, Álvaro Sebastián
Duine, R A
Institución
Resumen
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. Keywords. KeyWords Plus:DOMAIN-WALL MOTION MAGNETIC MULTILAYER ELECTRIC-CURRENT SPIN-WAVES ANALOG EXCITATION DYNAMICS ENTROPY Regular 2015 FONDECYT FONDECYT