Berlin 2024 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 35: Spin Transport and Orbitronics, Spin-Hall Effects I (joint session MA/TT)
MA 35.7: Vortrag
Donnerstag, 21. März 2024, 11:00–11:15, H 2013
Electrically induced angular momentum flow between separated ferromagnets — •Matthias Grammer1,2, Richard Schlitz3, Tobias Wimmer1,2, Janine Gückelhorn1,2, Luis Flacke1,2, Sebastian T.B. Goennenwein4, Rudolf Gross1,2,5, Hans Huebl1,2,5, Akashdeep Kamra6, and Matthias Althammer1,2 — 1Walther-Meißner-Institut, BAdW, Garching, Germany — 2School of Natural Sciences, TUM, Garching, Germany — 3Department of Materials, ETH Zürich, Zürich, Switzerland — 4Department of Physics, University of Konstanz, Konstanz, Germany — 5Munich Center for Quantum Science and Technology, München, Germany — 6IFIMAC and Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, Spain
The transfer of angular momentum between electrons, magnons and phonons is pivotal for spintronic devices making use of angular momentum currents. Here, we demonstrate angular momentum transfer between two isolated ferromagnetic metal strips on diamagnetic substrates [1]. Experimentally we apply a DC charge current at one of the magnetic electrodes which is converted into an electronic spin current and consequently transfered to the magnonic system. Using the inverse process at the second electrode, we can detect the induced angular momentum flow between the electrodes up to micron distances. We attribute this transfer mechanism to dipolar and potentially phononic interactions.
[1] R. Schlitz et al., arXiv:2311.05290(2023)