Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems

Abstract

We use electrical detection, in combination with microwave transmission, to investigate both resonant and non-resonant magnon-photon coupling at room temperature. Spin pumping in a dynamically coupled magnon-photon system is found to be distinctly different from previous experiments. Characteristic coupling features such as modes anti-crossing, line width evolution, peculiar line shape, and resonance broadening are systematically measured and consistently analyzed by a theoretical model set on the foundation of classical electrodynamic coupling. Our experimental and theoretical approach pave the way for pursuing microwave coherent manipulation of pure spin current via the combination of spin pumping and magnon-photon coupling.

5 pages, 3 figures

References in corpus (5)

• Strongly coupled magnons and cavity microwave photons
• Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
• High Cooperativity Cavity QED with Magnons at Microwave Frequencies
• Microwave photovoltage and photoresistance effects in ferromagnetic microstrips
• Observation of second-harmonic generation induced by pure spin currents

Cited by in corpus (4)

• Magnon Kerr effect in a strongly coupled cavity-magnon system
• Optical manipulation of a magnon-photon hybrid system
• Low loss spin wave resonances in organic-based ferrimagnet vanadium tetracyanoethylene thin films
• Linking Magnon-Cavity Strong Coupling to Magnon-Polaritons through Effective Permeability