Dresden 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 32: Focus Session: Magnetic Correlations in Mesoscopic Spin Structures
MA 32.4: Hauptvortrag
Mittwoch, 22. März 2017, 11:15–11:45, HSZ 01
Skyrmions in [Pt/Co/Ir] multilayers at room temperature — •Katharina Zeissler1, Simone Finizio2, Jörg Raabe2, Michal Mruczkiewicz3, Philippa Shepley1, Thomas Moore1, Gavin Burnell1, and Christopher Marrows1 — 1School of Physics and Astronomy, Leeds University, E.C. Stoner Building, Leeds, UK, LS2 9JT — 2Paul Scherrer Institute, 5232 Villigen, Switzerland — 3Institute of Electrical Engineering, Slovak Academy of Sciences, Dubravska Cesta 9, SK-841-04 Bratislava, Slovakia
Magnetic quasiparticles such as skyrmions are important objects in the quest for novel magnetic information storage. They have been observed in bulk materials as well as in multilayer systems. The latter has great scope for applications due to skyrmion stability at room temperature. The nucleation, manipulation and detection of skyrmions are active research areas. The focus of this talk will be skyrmion stabilisation and detection in [Pt/Co/Ir] multilayer nanodiscs and their manipulation via external stimuli such as external magnetic fields and current pulses. Chiral spin textures, including skyrmion bubbles, were stabilised in nanodiscs and imaged using scanning X-ray microscopy and their electrical response was measured in situ. This setup allowed for a direct comparison between the chiral magnetic state and its electrical transport signature. The influence of pinning due to stack imperfections was found to be of importance for skyrmion stabilisation.