Poster (After Call)

FZJ-2024-02084

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Room Temperature Skyrmions in Pt/Co/Ta multilayers

Montanez Huaman, L. M. (First author)FZJ* ; Kentzinger, E.FZJ* ; Cortie, D. ; Ahrens, V. ; Guasco, L. ; Keller, T. ; Skoulatos, M. ; Becherer, M. ; Pütter, S. (Corresponding author)FZJ*

2024

Abstract: 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 reflectome- try measurements. The latter have been performed with the neutron reflectometer Platypus at ANSTO, Australia.

Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd)

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Contributing Institute(s):

1. JCNS-4 (JCNS-4)
2. Streumethoden (JCNS-2)
3. JCNS-FRM-II (JCNS-FRM-II)
4. Heinz Maier-Leibnitz Zentrum (MLZ)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
2. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)

Experiment(s):

1. MBE-MLZ: Molecular Beam Epitaxy at MLZ

Appears in the scientific report 2024

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