Thermal induced monochromatic microwave generation in magnon-polariton
arXiv:1902.08383 · doi:10.1103/PhysRevB.99.224408
Abstract
We propose thermal induced generation of monochromatic microwave radiation in magnon-polariton. Mechanism of thermal to microwave energy transformation is based on intrinsic energy loss compensation of coupled magnon and microwave cavity oscillators by thermal induced "negative damping". A singularity at an exceptional point is achieved when at the critical value of "negative damping" the damping of the system is fully compensated. At the exceptional point, the input energy is equally distributed between the magnon and photon subsystems of the magnon-polariton. The efficiency of transformation of thermal energy into useful microwave radiation is estimated to be as large as 17 percent due to magnon-photon coupling mediated direct conversation of spin current into microwave photons.
References in corpus (12)
- The physics of exceptional points
- Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
- Observation of the exceptional point in cavity magnon-polaritons
- Voltage-Induced Ferromagnetic Resonance in Magnetic Tunnel Junctions
- Exchange Magnon-Polaritons in Microwave Cavities
- Electronic control of the spin-wave damping in a magnetic insulator
- Cavity mediated manipulation of distant spin currents using cavity-magnon-polariton
- Magnetization oscillations and waves driven by pure spin currents
- Abnormal anti-crossing effect in photon-magnon coupling
- Simultaneous detection of the spin-Hall magnetoresistance and the spin-Seebeck effect in Platinum and Tantalum on Yttrium Iron Garnet
- Control of the magnon-photon level attraction in a planar cavity
- Indirect coupling of magnons by cavity photons