Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 51: Spin Transport and Orbitronics, Spin-Hall Effects II (joint session MA/TT)

MA 51.7: Vortrag

Donnerstag, 12. März 2026, 16:30–16:45, POT/0361

Current-induced orbital dynamics in magnetic oxides — •Mahmoud Zeer¹, Marjana Ležaic¹, Dongwook Go^1,2, Leonid Pourovskii³, Stefan Blügel^1,4, Mathias Kläui², Olena Gomonay², and Yuriy Mokrousov^1,2 — ¹Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany — ²Institute of Physics, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany — ³CPHT, CNRS, École polytechnique, Institut Polytechnique de Paris, 91120 Palaiseau, France — ⁴Institute of Theoretical Physics, RWTH Aachen University, 52074 Aachen, Germany

Magnetic oxides provide an ideal platform for exploring orbital de- grees of freedom emerging from strong orbital angular momentum and spin-orbit coupling. The resulting unquenched orbital moments en- able rich orbital-transport phenomena, particularly in antiferromag- netic systems. In this work, we investigate current-induced orbital dy- namics in representative transition-metal oxides using first-principles calculations in both bulk and thin-film geometries. We identify siz- able orbital response and highly efficient orbital-to-spin conversion mechanisms, which give rise to substantial torque components on the magnetic sublattices [1]. In addition, we analyze the contributions of dipole, quadrupole, and octupole magnetic moments to the overall orbital response. Our findings establish magnetic oxides as a promis- ing and realistic platform for harnessing orbital degrees of freedom for next-generation spin-orbital technologies. [1] S. Krishnia, C. Schmitt, M. Zeer et al., under review.

Keywords: Orbitronics; Spin transport; Orbital torque; Magnetic oxide