Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.10: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster C
Room Temperature Skyrmions in Pt/Co/Ta multilayers — Liz Montañez1, Emmanuel Kentzinger2, David Cortie3, Valentin Ahrens4, Laura Guasco5, Thomas Keller5, Markos Skoulatos6, Markus Becherer4, and •Sabine Pütter1 — 1FZ Jülich, Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Garching, Germany — 2FZ Jülich, JCNS and Peter Grünberg Institut, JARA-FIT, Germany — 3ARC Centre of Excellence in Future Low Energy Electronics Technologies and Institute for Superconducting and Electronic Materials, University of Wollongong, Australia — 4Chair of Nano and Quantum Sensors, TU of Munich, Germany — 5Max Planck Society Outstation at the MLZ, Garching, Germany — 6MLZ and Physics Department, TU of Munich, Germany
Magnetic skyrmions are topologically stabilized spin configurations on the nanoscale. In magnetic multilayers, they can be stabilized at room temperature. Polycrystalline[Pt(40Å)/Co(x)/Ta(19Å)]N multilayers were fabricated in a molecular beam epitaxy setup by thermal deposition on oxidized Si(001) substrates with a Ta buffer layer and a Pt cap layer. The Co film thickness was varied between 5 Å and 21 Å and N varied between 8 and 10.
Magnetic force microscopy measurements reveal the existence of skyrmions at a Co thickness between 9 Å and 17 Å. We discuss results obtained from magnetic hysteresis, transport and neutron reflectometry measurements. The latter have been performed with the neutron reflectometer Platypus at ANSTO, Australia.
Keywords: Thin films; Skyrmions; Polarized neutron reflectivity; Magnetic force microscopy