Dresden 2026 – scientific programme

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MA: Fachverband Magnetismus

MA 52: Poster Magnetism III

MA 52.19: Poster

Thursday, March 12, 2026, 15:00–17:00, P4

Characterization of spin-Hall nano-oscillators — •Christine Strickler, Moritz Bechberger, Julien Schäfer, Björn Heinz, and Philipp Pirro — Fachbereich Physik and Landesforschungszentrum OPTIMAS, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, D-67663 Kaiserslautern, Germany

Within the research field of spintronics, spin-Hall nano-oscillators (SHNOs) have emerged as promising candidates for building blocks in neuromorphic computing. These devices typically consist of a bi layer comprising a ferromagnetic (FM) and a heavy metal (HM) layer. Typically, a direct charge current is applied to the HM, which injects a spin current into the FM via the spin Hall effect, exerting spin orbit torques that can counteract the natural damping of the FM and thereby excite coherent auto-oscillations. We perform ferromagnetic resonance spectroscopy on fabricated full-film bilayer systems to opti mize the material stack in terms of FM-layer thickness and FM/HM interface quality. The materials selected for this study are CoFeB and NiFe as FM and Pt and W as HM, which leads to four potential ma terial stacks. The optimized stacks are fabricated in several SHNO geometries and sizes to investigate their properties concerning mode spectrum and threshold current for auto-oscillation via Brillouin light scattering spectroscopy. This study of SHNO fabrication paves the way for further investigation into such structures and their potential coupling phenomena.

Keywords: SHNO; Spin-Hall oscillator; Nanofabrication; Nanostructuring