Regensburg 2019 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 34: Magnetic textures: Transport and dynamics II
MA 34.3: Vortrag
Mittwoch, 3. April 2019, 15:45–16:00, H37
Approaching the Skyrmion shift register — •Christian Denker1, Sören Nielsen2, Malte Römer-Stumm2, Nina Meyer1, Neha Jha1, 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
The experimental realization of Skyrmion race track memories or shift registers requires a material system able to host Skyrmions with reasonable lifetime and allowing control of skyrmion motion and pinning, preferably by electric currents or fields. Ta/CoFeB/MgO fulfills these requirements and shows the highest reported TMR ratios for magnetic tunnel junctions (MTJ) and is, therefore, an ideal candidate for all electrical generation and detection by MTJs which is desirable but to our knowledge still lacking. We will show our results on current induced Skyrmion motion in Ta/CoFeB/MgO trilayers, as well as our experiments on Skyrmions in MTJ layer stacks.