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MA: Fachverband Magnetismus

MA 8: INNOMAG e.V. Prizes 2024 (Diplom-/Master and Ph.D. Thesis)

MA 8.6: Talk

Monday, March 18, 2024, 17:05–17:30, H 1058

Antiferromagnetic Insulatronics: Control and Manipulation of Magnetic Domains — •Hendrik Meer — Institute of Physics, Johannes Gutenberg-University Mainz

The control of the spin structure is key for the development of future antiferromagnetic spintronic devices. Here, we explore how the antiferromagnetic domains of insulating NiO and CoO thin films can be manipulated. We use synchrotron and lab-based imaging to investigate three key tools to control the antiferromagnetic order: First, we apply electric currents through an adjacent heavy metal layer and study different device geometries to determine the underlying switch- ing mechanism [1]. Second, we investigate the effect of the patterning shape on the antiferromagnetic ground state [2]. Third, we explore a non-contact writing scheme of the antiferromagnetic ordering via irradiation with laser pulses [3]. By revealing several writing mechanisms for the antiferromagnetic order, we expand the toolbox of antiferromagnetic insulatronics [4].

[1] H. Meer et al., Nano Lett. 21, 114 (2021).

[2] H. Meer et al., Phys. Rev. B 106, 094430 (2022).

[3] H. Meer et al., Adv. Funct. Mater. 2213536 (2023).

[4] H. Meer et al., Appl. Phys. Lett. 122, 080502 (2023).