Magnonic black holes

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.

arXiv comment6 pages, 1 figure

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• Mapping the magnonic landscape in patterned magnetic structures
• Synthetic gravitational horizons in low-dimensional quantum matter
• Spin-wave amplification and lasing driven by inhomogeneous spin transfer torques
• Probing Lorentz-Invariance-Violation Induced Nonthermal Unruh Effect in Quasi-Two-Dimensional Dipolar Condensates
• The Theory of Optical Black Hole Lasers
• Magnonic Hall Effect and Magnonic Holography of Hopfions
• Analogue Hawking Radiation and Sine-Gordon Soliton in a Superconducting Circuit
• Theory of quantum entanglement and the structure of two-mode squeezed antiferromagnetic magnon vacuum
• Nanoscale X-Ray Imaging of Spin Dynamics in Yttrium Iron Garnet
• Proposal for an analog Schwarzschild black hole in condensates of light
• Magnonic Analogue of Black/White Hole Horizon in Superfluid ${}^3$He-B
• Thermalization by a synthetic horizon
• Analogue gravity by an optical vortex. Resonance enhancement of Hawking radiation
• Horizon physics of quasi-one-dimensional tilted Weyl cones on a lattice
• Quantum chaos associated with emergent ergosurface in transition layer between type-I and type-II Weyl semimetals
• Classical Hydrodynamics for Analogue Spacetimes: Open Channel Flows and Thin Films
• Chiral Spin-Chain Interfaces Exhibiting Event-Horizon Physics
• Anisotropic optics and gravitational lensing of tilted Weyl fermions
• Analog spacetimes from nonrelativistic Goldstone modes in spinor condensates
• Viscous dissipation of surface waves and its relevance to analogue gravity experiments
• AdS/CFT Correspondence with a 3D Black Hole Simulator
• Magnonics along the wall in Bimeron Chain Domain Walls
• Electron Currents from Gradual Heating in Tilted Dirac Cone Materials
• Instability of magnetic skyrmion strings induced by longitudinal spin currents
• Optimally scrambling chiral spin-chain with effective black hole geometry
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• Simulating superluminal propagation of Dirac particles using trapped ions
• Dynamically stable negative-energy states induced by spin-transfer torques
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• Quantized Toroidal Waves on Ferrotoroidal Magnets
• Emergent quantum field theories on curved spacetimes in spinor Bose-Einstein condensates: from scalar to Proca fields
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• Current-Induced Spin-Wave Doppler Shift in Antiferromagnets
• Synthetic horizons in an atomic chain: Horizon-induced effects and connections to quantum Hall systems