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TT: Fachverband Tiefe Temperaturen

TT 92: Focus Session: Spinorbitronics - From Efficient Charge/Spin Conversion Based on Spin-Orbit Coupling to Chiral Magnetic Skyrmions II (joint session MA/TT)

TT 92.10: Talk

Thursday, March 15, 2018, 17:45–18:00, H 1012

Dynamics of interacting Skyrmions in densely populated Skyrmion lattices — •Martin Stier and Michael Thorwart — University of Hamburg, Hamburg, Germany

We address issues which may arise in densely populated Skyrmion lattices which are possibly used in future high-capacity memory devices. A manipulation of the information-carrying Skyrmions is typically achieved by electrical currents - either in terms of spin-transfer or spin-orbit torques. However, Skyrmions themselves distort these torques in their surrounding area. This can actually result in the creation of new Skyrmions under certain conditions. Furthermore, an interaction between Skyrmions in different layers, e.g. in an artificial antiferromagnet, will change the dynamics of the according Skyrmions. This can even have beneficial effects, such as the prevention of the drift due to the Skyrmion Hall effect and an increase of the velocity.