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MA: Fachverband Magnetismus

MA 44: Focus Session: Curvilinear magnetism: Magnetics with nanoscale curved geometries (joint session MA/TT)

MA 44.4: Hauptvortrag

Donnerstag, 12. März 2026, 11:15–11:45, POT/0151

Advanced Control of Magnetic Nanostructures via Metasurface Engineering and Voltage-Driven Functionalities — •Anna Palau — Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)

Understanding and manipulating magnetic micro- and nanostructures are fundamental to advancing technologies in data storage, spintronics, and magnetic sensing. Magnetic metasurfaces have recently attracted significant interest for their ability to locally configure magnetic field distributions and overcome limitations of traditional magnetic imaging techniques. In this work, we demonstrate how metasurfaces enable precise control of vortex motion, coercive fields, and saturation behaviour in magnetic nanostructures without altering their intrinsic anisotropy [1]. We show that metasurfaces can overcome magnetic field constraints in X-ray Photoemission Electron Microscopy (XPEEM), enabling high-resolution imaging of magnetisation states under conditions previously inaccessible. Additionally, we explore electric-field-driven ionic migration as a complementary route for voltage-controlled, non-volatile modulation of magnetic and superconducting properties [2], highlighting new opportunities for energy-efficient control and advanced characterisation. [1] Barrera et al. ACS Nano 19, 10461 (2025), [2] Günkel et al. Small 2411908 (2025), Spasojević et al. Nat. Commun. 16, 1990 (2025)

Keywords: Magnetic Metasurfaces; Voltage-Controlled Functionalities; Nanoscale Magnetic Architectures; Magnetic sensors; XPEEM Imaging