Dresden 2026 – wissenschaftliches Programm

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SYSD: Symposium SKM Dissertation Prize 2026

SYSD 1: SKM Dissertation Prize Symposium 2026

SYSD 1.2: Hauptvortrag

Montag, 9. März 2026, 10:00–10:30, HSZ/0002

Nonuniform magnetic spin textures for sensing, storage and computing applications — •Sabri Koraltan — Insitute of Applied Physics, TU Wien, Vienna, Austria

Spintronic materials underpin many modern technologies, from hard-disk drives to magnetic sensors. While these applications traditionally rely on uniform magnetization states, recent advances focus on nonuniform magnetic textures such as vortices, and skyrmions. In my doctoral thesis, I explored such textures for sensing, storage, and computing applications [1].

The first part of my talk covers the discovery and characterization of spin textures with arbitrary topological charge in ferromagnetic [Co/Ni] multilayers [2]. Using simulations and experiments, we demonstrate coexisting higher-order skyrmions and antiskyrmions and uncover their distinct dynamics under spin-transfer torques.

The second part presents a three-dimensional magnetic-field sensor with a wide linear range and intrinsic offset cancellation, enabled by spin-orbit torque symmetry in a [W/CoFeB/MgO]*10 multilayer that stabilizes stripe domains and skyrmions [3]. I will show, through experiment and micromagnetics, how spin-orbit torques reshape the magnetic state at high current densities to achieve full 3D sensing, with topological transitions detected electrically via the anomalous Hall effect.

[1]SK (2025), PhD Thesis, doi:10.25365/THESIS.77909;[2] MH, SK et al., Nat. Phys. 20 (2024) 615*622;[3] SK et al., arXiv:2403.16725 (2024).