Dresden 2020 – scientific programme

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MA: Fachverband Magnetismus

MA 14: General Spintronics

MA 14.9: Talk

Monday, March 16, 2020, 17:15–17:30, HSZ 401

Modeling of current induced switching in Mn2Au — •Severin Selzer¹, Leandro Salemi², András Deák³, Eszter Simon³, Karel Carva⁴, László Szunyogh³, Peter M. Oppeneer², and Ulrich Nowak¹ — ¹Fachbereich Physik, Universität Konstanz, DE-78457 Konstanz, Germany — ²Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden — ³Department of Theoretical Physics, Budapest University of Technology and Economics, H-1111 Budapest, Hungary — ⁴Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, CZ 121 16 Prague, Czech Republic

Mn2Au is a promising candidate as material for future antiferromagnetic spintronic devices, since its order parameter can be switched by 90 degree via electric currents [1]. The switching mechanism relies on the Edelstein effect that gives rise to induced magnetic moments, which in Mn2Au are staggered due to the broken inversion symmetry.

We model the current-induced switching within the framework of atomistic spin dynamics simulations based on a multiscale approach were the parameters for the spin model as well as for the Edelstein effect were calculated from first principles [2]. Within this model, we explore the mechanism and the time scales involved in the switching process.

[1] J. Zelezný, P. Wadley, K. Olejník, A. Hoffmann, and H. Ohno, Nature Physics 14, 220 (2018).

[2] L. Salemi, M. Berritta, A. K. Nandy, and P. M. Oppeneer, Nat Commun 10, 1 (2019).