Dresden 2020 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 25: Skyrmions I (joint session MA/TT)
TT 25.8: Talk
Tuesday, March 17, 2020, 11:45–12:00, POT 6
Beyond Skyrmions Utilizing alternative magnetic quasiparticles for spintronics devices — •Börge Göbel1,2, Oleg Tretiakov3, Stuart S. P. Parkin2, and Ingrid Mertig1 — 1Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale), Germany — 2Max-Planck-Institut für Mikrostrukturphysik, Halle (Saale), Germany — 3School of Physics, The University of New South Wales, Sydney, Australia
Skyrmions are considered as the bits in future spintronic devices like the racetrack storage. One issue, which is hindering the realization of this application, is the so-called skyrmion Hall effect: A skyrmion does not move parallel to an applied spin-polarized current. Instead, the skyrmion is pushed towards the edge of the sample where it annihilates. In this talk, I will give an overview about observed or proposed alternative magnetic quasiparticles. The stabilization, as well as the emergent electrodynamic effects will be discussed for the antiskyrmion, the antiferromagnetic skyrmion, the skyrmionium, and the bimeron. These magnetic objects are either attractive from a fundamental point of view, or are advantageous application-wise.
[1] B. Göbel, A. Mook, J. Henk, I. Mertig. PRB 96, 060406(R) (2017) [2] B. Göbel, A. Schäffer, J. Berakdar, I. Mertig, S. Parkin. Sci. Rep. 9, 12119 (2019) [3] B. Göbel, A. Mook, J. Henk, I. Mertig, O. Tretiakov. PRB 99, 060407(R) (2019) [4] B. Göbel, J. Henk, I. Mertig. Sci. Rep. 9, 9521 (2019)