Resonances in Ferromagnetic Gratings Detected by Microwave Photoconductivity

Details Resonances in Ferromagnetic Gratings Detected by Microwave Photoconductivity Resonances in Ferromagnetic Gratings Detected by Microwave Photoconductivity

2005-02-18

arxiv.org/abs/cond-mat/0502442v1

Phys. Rev. Lett. 95, 056807 (2005)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.056807

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.

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