SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 31: Functional Antiferromagnetism II
MA 31.3: Vortrag
Mittwoch, 29. März 2023, 15:30–15:45, HSZ 04
Control and manipulation of antiferromagnetic domains in NiO — •Hendrik Meer1, Christin Schmitt1, Olena Gomonay1, Stephan Wust2, Paul Herrgen2, Baerbel Rethfeld2, Benjamin Stadmüller1,2, Martin Aeschlimann2, Jairo Sinova1, Rafael Ramos3,4, Lorenzo Baldrati1, Eiji Saitoh4,5, and Mathias Kläui1 — 1Institute of Physics, Johannes Gutenberg-University Mainz, Mainz, Germany — 2Department of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany — 3CIQUS, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain — 4WPI-Advanced Institute for Materials Research, Tohoku University, Sendai, Japan — 5Department of Applied Physics, The University of Tokyo, Tokyo, Japan
Control of the spin structure is key for the development of future antiferromagnetic spintronic devices. We show how the antiferromagnetic domains of NiO/Pt bilayers can be modified by applying electric currents [1], patterning geometric elements [2], and irradiating with laser light [3]. We image the induced changes in the antiferromagnetic order with synchrotron and lab-based magnetic microscopy. We are able to reveal writing mechanisms for the antiferromagnetic order, laying the foundation for an active role of antiferromagnets in future devices.
[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., arXiv:2210.11009 [cond-mat.mtrl-sci] (2022).