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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.