Regensburg 2022 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 19: Poster 1

MA 19.44: Poster

Dienstag, 6. September 2022, 17:30–20:00, P2

Current-induced interlayer DMI in synthetic antiferromagnets — •Fabian Kammerbauer¹, Won-Young Choi¹, Freimuth Frank², Kyujoon Lee³, Robert Frömter¹, Yuriy Mokrousov^1,2, and Mathias Kläui¹ — ¹Institute of Physics, Joahnnes Gutenberg University, Staudingerweg 7, 55128 Mainz, Germany — ²Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany — ³Division of display and semiconductor physics, Korea University, Sejong-ro 2511, Sejong, Republic of Korea

There is rising interest in 3D magnetism and magnetic textures, such as hopfions. Stabilizing 3D magnetic textures is in need of additional interactions favoring the canting of spins in the lateral direction. Layered synthetic antiferromagnets coupled by the symmetric interlayer exchange can additionally display an antisymmetric interlayer exchange, henceforth called interlayer DMI, which exerts such canting. Here, we report the effect of an electrical current on the antisymmetric interlayer DMI by employing anomalous Hall effect measurements with an additional applied in-plane field. In order to quantify the current dependence of the antisymmetric interlayer exchange interaction, an interlayer DMI field is introduced. Using a model of two superimposed cosine functions accounting for current-dependent and static contributions, we demonstrate that the current-dependent interlayer DMI field increases linearly with current and maximal along the direction of current flow. Thus, we demonstrate the possibility to control the interlayer DMI directly by electrical currents.