Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 45: Skyrmions III (joint session MA/TT)

TT 45.3: Vortrag

Mittwoch, 18. März 2020, 15:30–15:45, POT 6

Stability and dynamics of in-plane Skyrmions — •Venkata Krishna Bharadwaj1, Ricardo Zarzuela1, Kyoung-Whan Kim2, Jairo Sinova1,3, and Karin Everschor-Sitte11Johannes Gutenberg-University, Mainz — 2Center for Spintronics, Korea Institute of Science and Technology, South Korea — 3Institute of Physics Academy of Sciences of the Czech Republic, Cukrovarnická 10, 162 00 Praha 6, Czech Republic

In this work [1] we analyze skyrmions in in-plane magnets. Through symmetry analysis, we offer possible material candidates to observe these skyrmions and also provide the phase diagram of such crystal systems. In addition, we determine their stability and properties, taking into account the crystal symmetries of the materials. Using micromagnetic simulations we show that in-plane skyrmions can be produced via two mechanisms, namely: i) the ’blowing bubbles’ technique, i.e the creation of skyrmions due to current flow through constricted geometries and ii) shedding of skyrmions from a magnetic impurity driven by spin-transfer torques, analogues to their out-of-plane counterparts. Furthermore, we study the spin-orbit torques driven skyrmion dynamics both analytically and through micromagnetic simulations. Our results also indicate the possibility of designing the racetrack for in-plane skyrmions, which are promising candidates for memory applications. [1]R. Zarzuela, V.K. Bharadwaj, K-W. Kim, J. Sinova, K. Everschor-Sitte, arXiv:1910.00987 (2019)

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