Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 52: Poster Magnetism III
MA 52.14: Poster
Thursday, March 12, 2026, 15:00–17:00, P4
Backward volume spin waves in ion-implanted magnonic YIG waveguides — •Sven Niehues1, Jannis Bensmann1, Robert Schmidt1, Kirill O. Nikolaev2, Dimitri Raskhodchikov1, Shraddha Choudhary1, Richa Bhardwaj1, Shabnam Taheriniya1,3,4, Akhil Varri1,3, Ahmad El Kadri1, Johannes Kern1, Wolfram H. P. Pernice1,3,4, Sergej O. Demokritov2, Vladislav E. Demidov2, Steffen Michaelis de Vasconcellos1, and Rudolf Bratschitsch1 — 1Institute of Physics and Center for Nanotechnology (CeNTech), University of Münster — 2Institute of Applied Physics, University of Münster — 3Center for Soft Nanoscience, University of Münster — 4Kirchhoff-Institute for Physics, Heidelberg University
Magnonics offers a promising alternative approach to conventional information processing due to the low-energy nature of spin waves and distinctive features such as nm-scale wavelengths. Recently, the fabrication of dispersion-tunable magnonic waveguides and a large-scale spin-wave network with 198 crossings have been demonstrated using a newly developed maskless silicon ion implantation technique [1]. Here, we show that backward volume spin waves (BVSW) propagate in silicon-ion implanted waveguides written into YIG thin films. Using time-resolved Faraday rotation spectroscopy, we extract the dispersion relation, the mode profile and damping of the BVSWs. Our results demonstrate the versatility of silicon-ion implanted magnonic waveguides, offering a promising route toward magnonic integrated circuits. Reference: [1] J. Bensmann, et al. Nat. Mat. 24, 1920-1926 (2025).
Keywords: spin wave; magnon; magnonic waveguide