2020/12/17 by Jin Lan, Weichao Yu, Jiang Xiao · 19 citations
Chemistry · Physics and Astronomy · #Angular momentum #Antiferromagnetism #Chemistry #Classical mechanics #Condensed matter physics #Domain wall (magnetism) #Excitation #Ferromagnetism #Magnetic domain #Magnetic field #Magnetic properties of thin films #Magnetism #Magnetization #Magnonics #Physics #Physics of Superconductivity and Magnetism #Polarization (electrochemistry) #Quantum mechanics #Spin Hall effect #Spin polarization #Spin wave #Theoretical and Computational Physics #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.103.214407
published in Physical review. B./Physical review. B 103(21) (American Physical Society) · 9 pages, 5 figures
arxiv created 2020/12/17 · openalex publication_date 2021/06/02 · arxiv updated 2021/06/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Spin wave, the collective excitation of magnetic order, is one of the fundamental angular momentum carriers in magnetic systems. Understanding the spin wave propagation in magnetic textures lies in the heart of developing pure magnetic information processing schemes. Here we show that the spin wave propagation across a chiral domain wall follows simple geometric trajectories, similar to the geometric optics. And the geometric behaviors are qualitatively different in normally magnetized film and tangentially magnetized film. We identify the lateral shift, refraction, and total reflection of spin wave across a ferromagnetic domain wall. Moreover, these geometric scattering phenomena become polarization dependent in antiferromagnets, indicating the emergence of spin wave birefringence inside antiferromagnetic domain walls.