2019/04/25 by Zhizhi Zhang, Michael Vogel, José Holanda +11 · 25 citations
Engineering · Physics and Astronomy · #Antisymmetric relation #Brillouin scattering #Brillouin zone #Condensed matter physics #Ferromagnetism #Magnetic field #Magnetic properties of thin films #Magneto-Optical Properties and Applications #Magnonics #Mechanical and Optical Resonators #Optical fiber #Optics #Physics #Quantization (signal processing) #Quantum mechanics #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Spin wave #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevb.100.014429
published in Physical review. B./Physical review. B 100(1) (American Physical Society) · 18 pages, 9 figures
arxiv created 2019/04/25 · openalex publication_date 2019/07/24 · arxiv updated 2019/07/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
In the emerging field of magnonics, spin waves are considered for information processing and transmission at high frequencies. Accordingly, the manipulation of propagating spin waves in nanostructured waveguides for novel functionality has attracted increased attention. Excitations with uniform magnetic fields in such waveguides favor symmetric spin-wave modes with odd quantization numbers. Interference between multiple odd spin-wave modes leads to a periodic self-focusing effect of the propagating spin waves. In this work we demonstrate how antisymmetric spin-wave modes with even quantization numbers can be induced by local magnetic fields in a well-controlled fashion. The resulting interference patterns are discussed within an analytical model and experimentally demonstrated using microfocused Brillouin light scattering.