24-27 November 2022
Karlsruhe Institute of Technology
Europe/Berlin timezone

Current-driven writing process in antiferromagnetic Mn2Au for memory applications

26 Nov 2022, 16:00
2h
Foyer (KIT Campus South)

Foyer

KIT Campus South

KIT Campus map: https://www.kit.edu/campusplan/ Building: 30.22 Room: Foyer im 1. und 2. OG Address: Institute of Technology, Engesserstraße 7, 76131 Karlsruhe Coordinates: 49.01244, 8.41062
Poster Physics Posters Poster session

Speaker

Dr. Yaryna Lytvynenko ( Johannes Gutenberg-University Mainz)

Description

Current pulse-driven Neel vector rotation in metallic antiferromagnets is one of the most promising concepts in antiferromagnetic spintronics. We show microscopically that the Neel vector of epitaxial thin films of the prototypical compound Mn2Au can be reoriented reversibly in the complete area of cross-shaped device structures using single current pulses. The resulting domain pattern with
aligned staggered magnetization is long-term stable enabling memory applications. We achieve this switching with low heating of ≈ 20 K, which is promising regarding fast and efficient devices without the need for thermal activation. Current polarity-dependent reversible domain wall motion demonstrates a Neel spin-orbit torque acting on the domain walls.

Category Solid State (Experiment)

Primary author

Dr. Yaryna Lytvynenko ( Johannes Gutenberg-University Mainz)

Co-authors

Dr. S. Reimers ( Johannes Gutenberg-University Mainz) Y. Niu (MAX IV Laboratory) E. Golias (MAX IV Laboratory) Prof. M. Klaeui ( Johannes Gutenberg-University Mainz) M. Jourdan ( Johannes Gutenberg-University Mainz)

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