Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 7: Poster Magnetism I
MA 7.70: Poster
Montag, 9. März 2026, 09:30–12:30, P2
Noise measurements on magnetic skyrmions in magnetic multilayers — •Arthur Schmidt1, Bereket Ghebretinsae1, Joe Sunny2, Manfred Albrecht2, and Jens Müller1 — 1Institute of Physics, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany — 2Institute of Physics, University of Augsburg, Universitätsstraße 1, 86135 Augsburg, Germany
Magnetic skyrmions are topologically protected spin textures which
usually appear in materials with broken inversion symmetry and
strong spin-orbit coupling due to emergent Dzyaloshinskii-Moriya
interaction (DMI). While in bulk materials skyrmions exist mostly
at low temperatures, in magnetic multilayers (MM) they can be
stabilized at room temperature [1], which, in combination with their
small size, stability and fast and energy efficient movement, make
them promising for spintronics applications e.g. in unconventional
computing and high-density magnetic storage. Here we present first
results on low-frequency resistance noise spectroscopy measurements
on Pt-Co-Ta-based MM systems which host Néel-type skyrmions at
room temperature. The intention is to utilize low-frequency noise as
an effective probe for the electrical characterization of fundamental
skyrmion properties such as the skyrmion lattice constant or their
mean velocity and to investigate their current-induced dynamics [2-4].
[1] Hassan et al., Nat. Phys. 20, 615 (2024)
[2] Sato et al., Phys. Rev. B 100, 094410 (2019)
[3] Wang et al., Phys. Rev. B 108, 094431 (2023)
[4] Diaz et al., Phys. Rev. B 96, 085106 (2017)
Keywords: magnetic skyrmions; noise; resistance fluctuations; magnetic multilayers