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Dresden 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

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TT: Fachverband Tiefe Temperaturen

TT 25: Skyrmions I (joint session MA/TT)

TT 25.6: Vortrag

Dienstag, 17. März 2020, 11:00–11:15, POT 6

Skyrmions in Ta/CoFeB-wedge/MgOChristian Denker1, •Hauke Heyen1, Sören Nielsen2, Malte Römer-Stumm2, Nina Meyer1, Neha Jha1, Kornel Richter2, Enno Lage2, Markus Münzenberg1, and Jeffrey McCord21Institut 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.

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