Resonances in Ferromagnetic Gratings Detected by Microwave Photoconductivity

Abstract

We investigate the impact of microwave excited spin excitations on the DC charge transport in a ferromagnetic (FM) grating. We observe both resonant and nonresonant microwave photoresistance. Resonant features are identified as the ferromagnetic resonance (FMR) and ferromagnetic antiresonance (FMAR). A macroscopic model based on Maxwell and Landau-Lifschitz equations reveals the macroscopic nature of the FMAR. The experimental approach and results provide new insight in the interplay between photonic, spintronic, and charge effects in FM microstructures.

arXiv comment4 pages, 4 figures

References in corpus (3)

• Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current
• Direct-Current Induced Dynamics in Co90Fe10/Ni80Fe20 Point Contacts
• Quantized Dispersion of Two-Dimensional Magnetoplasmons Detected by Photoconductivity Spectroscopy

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• Rectification of radio frequency current in giant magnetoresistance spin valve
• Linking Magnon-Cavity Strong Coupling to Magnon-Polaritons through Effective Permeability
• Spin rectification for collinear and non-collinear magnetization and external magnetic field configurations