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MA: Fachverband Magnetismus

MA 1: Computational Magnetism I

MA 1.4: Vortrag

Montag, 16. März 2020, 10:15–10:30, HSZ 04

Electric field control of magnetism without currents: from experiments to ab-initio spectroscopy calculations. — •Eszter Simon, Alberto Marmodoro, Sergey Mankovsky, and Hubert Ebert — Department Chemie, Ludwig-Maximilians-Universität München

Recent x-ray magnetic dichroism (XMCD) experiments [1-3] have shown that the magnetic properties of an ultra thin Pt layer can be controlled by application of an electric field across the interface with a ferromagnetic substrate and through an insulating layer that prevents actual charge transport. We discuss ab-initio investigations of this experimental setup by means of a simple extension of the Korringa-Kohn-Rostoker method [3]. Our all-electron, fully relativistic implementation of the 2D TB-KKR scheme for semi-infinite systems allows to gain insight into the role of different lattice terminations in connection with spin-orbit coupling effects, to evaluate the role of dielectric/capping layers, and to cross-compare out-of-equilibrium results due to the applied finite perturbation in terms of ground state properties and theoretical spectroscopy simulations.

[1] F.Matsukura et. al., Nat.Nanotech 10, 209 (2015). [2] S.Miwa et al., Nat.Comm. 8, 15848. (2017). [3] K. Yamada et al., Phys. Rev. Lett. 120, 157203 (2018).