Refractive index and Snell's Law for Dipolar-Exchange Spin-Waves in a Confined Planar Structure

2009/01/13 by Dae-Eun Jeong, Jeong, Dae-Eun, Dong‐Soo Han +5
Engineering · Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Magneto-Optical Properties and Applications #Materials Science (cond-mat.mtrl-sci) #Other Condensed Matter (cond-mat.other) #Photonic Crystals and Applications

paper · pdf · doi:10.48550/arxiv.0901.1700

openalex publication_date 2009/01/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We derived the analytical forms of refractive index and Snell law for dipolar-exchange spin waves of reflection and refraction at a magnetically heterogeneous interface in a geometrically confined planer structure composed of different magnetic thin films from a microscopic scattering approach. A novel behavior, the optical total reflection, was demonstrated for spin waves with a specific interface between Yttrium iron garnet (Y3Fe5O12) and Permalloy (Ni80Fe20), by analytical and micromagnetic numerical calculations.

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