Dresden 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 25: Skyrmions I (joint session MA/TT)
MA 25.6: Vortrag
Dienstag, 17. März 2020, 11:00–11:15, POT 6
Skyrmions in Ta/CoFeB-wedge/MgO — Christian Denker1, •Hauke Heyen1, Sören Nielsen2, Malte Römer-Stumm2, Nina Meyer1, Neha Jha1, Kornel Richter2, Enno Lage2, Markus Münzenberg1, and Jeffrey McCord2 — 1Institut für Physik, Universität Greifswald, Germany — 2Nanoscale Magnetic Materials - Magnetic Domains, Institute for Materials Science, Universität Kiel, Germany
We investigate different generation approaches as well as pinning center distribution and strength for magnetic skyrmions in Ta/CoFeB-wedge/MgO trilayers. Skyrmions appear as a part of the out-of-plane hysteresis or using pulsed in-plane fields and zero-field stable skyrmions result from tilted in-plane remanent magnetic field application. Furthermore, we investigate energy landscapes for skyrmions by current-induced hopping motion in a stripe with regions of different defect types and densities, since skyrmion motion tracking allows us to access the pinning center distribution and strength.