Microscopic origin of level attraction for a coupled magnon-photon system in a microwave cavity
arXiv:1904.11570 · doi:10.1088/1367-2630/ab3cb7
Abstract
We discuss various microscopic mechanisms for level attraction in a hybridized magnon-photon system of a ferromagnet in a microwave cavity. The discussion is based upon the electromagnetic theory of continuous media where the effects of the internal magnetization dynamics of the ferromagnet are described using dynamical response functions. This approach is in agreement with quantized multi-oscillator models of coupled photon-magnon dynamics. We demonstrate that to provide the attractive interaction between the modes, the effective response functions should be diamagnetic. Magneto-optical coupling is found to be one mechanism for the effective diamagnetic response, which is proportional to photon number. A dual mechanism based on the Aharonov-Casher effect is also highlighted, which is instead dependent on magnon number.
arXiv commentNew Journal of Physics, Focus on Cavity Optomagnonics Issue
References in corpus (32)
- Cavity Optomechanics
- The physics of exceptional points
- Strongly coupled magnons and cavity microwave photons
- Optomechanical Crystals
- Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
- Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
- Cavity optomagnonics with spin-orbit coupled photons
- Optomagnonic whispering gallery microresonators
- Brillouin scattering induced transparency and non-reciprocal light storage
- Level Attraction Due to Dissipative Magnon-Photon Coupling
- Cavity quantum electrodynamics with ferromagnetic magnons in a small yttrium-iron-garnet sphere
- Magnetization transport and quantized spin conductance
- Exchange Magnon-Polaritons in Microwave Cavities
- Coupled Spin-Light dynamics in Cavity Optomagnonics
- Cavity mediated manipulation of distant spin currents using cavity-magnon-polariton
- Coupling of eigenvalues of complex matrices at diabolic and exceptional points
- Synchronized spin-photon coupling in a microwave cavity
- Optical cooling of magnons
- Optomagnonics in Magnetic Solids
- Light scattering by magnons in whispering gallery mode cavities
- Cavity Spintronics: An Early Review of Recent Progress in the Study of Magnon-Photon Level Repulsion
- Magnonic quantum Hall effect and Wiedemann-Franz law
- Cavity optomagnonics with magnetic textures: coupling a magnetic vortex to light
- Control of the magnon-photon level attraction in a planar cavity
- Level attraction in a microwave optomechanical circuit
- Cavity mediated coherent coupling of magnetic moments
- Spin pumping in strongly coupled magnon-photon systems
- Magnetic spheres in microwave cavities
- Indirect coupling of magnons by cavity photons
- Non-local coupling between antiferromagnets and ferromagnets in cavities
- Spin dynamical phase and anti-resonance in a strongly coupled magnon-photon system
- Cavity Optomechanics of Topological Spin Textures in Magnetic Insulators
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- Microscopic mechanism of level attraction
- Steering between Level Repulsion and Attraction: Broad tunability of Two-Port Driven Cavity Magnon-Polaritons
- An Electromagnetic Approach to Cavity Spintronics
- Mode attraction in Floquet systems with memory: application to magnonics
- Level attraction and exceptional points in a resonant spin-orbit torque system
- Collective dynamics of domain walls: an antiferromagnetic spin texture in an optical cavity
- Dichroic cavity mode splitting and lifetimes from interactions with a ferromagnetic metal
- Laser induced enhanced coupling between photons and squeezed magnons in antiferromagnets
- Ferroelectricity in a magnon Bose-Einstein condensate: Nonreciprocal superfluidity, exceptional points, and Majorana bosons