Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 37: Non-Skyrmionic Magnetic Textures

MA 37.5: Vortrag

Mittwoch, 11. März 2026, 16:00–16:15, POT/0351

Acoustically-driven manipulation of magnetic textures in epitaxial ferromagnetic thin-films — •João Pedro Leite Gomes, Jens Herfort, and Alberto Hernández-Mínguez — Paul-Drude-Institut für Festkörperelektronik - Leibniz-Institut im Forschungsverbund Berlin e.V., Hausvogteiplatz 5-7, 10117 Berlin, Germany

Recent advances in information technology have driven the research towards more reliable storage devices, while striving for ever higher memory densities. One drawback of current spintronic technologies for information recording is the need for large spin-polarized currents to access/write information in magnetic materials, leading to less energy-efficient devices. An alternative proposal to achieve controlled magnetization switching is to make use of the magnetoelastic (ME) interaction, for example, through the excitation of surface acoustic waves (SAW) in piezoelectric substrates.

In this contribution, we report SAW-driven manipulation of domain walls (DWs) in epitaxial ferromagnetic thin-films with both cubic and uniaxial magnetic anisotropies along well-defined crystalline directions. Micromagnetic simulations model the physical mechanism by which the tickling magnetic field generated by the strain modulation, via the ME interaction, can result in the local switching of the DWs. We discuss how much SAWs are a feasible approach to achieve magnetization switching and/or promote DW pinning in single crystal ferromagnetic thin-films.

Keywords: Surface Acoustic Waves; Magnetoelasticity; Epitaxial Thin Films; Cross-Tie Walls; Acoustic Spintronics