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MA: Fachverband Magnetismus

MA 40: Poster Magnetism II

MA 40.64: Poster

Thursday, March 30, 2023, 14:00–16:00, P2/EG

Magneto-transport measurements in altermagnetic RuO2 and MnTe — •Ruben Dario Gonzalez Betancourt1,2,3,4, Jan Zubáč3,4, Rafael Julian Gonzalez Hernandez5, Kevin Geishendorf3, Zbynek Šobáň3, Gunther Springholz6, Kamil Olejník3, Jakub Železný3, Philipp Ritzinger3, Joseph Dufouleur2, Louis Veyrat2, Teresa Tschirner2, Simon Moser7, Libor Šmejkal8, Tomas Jungwirth3,9, Sebastian Tobias Benedikt Goennenwein1,10, Andy Thomas1,2, Dominik Kriegner3, and Helena Reichlová1,31IFMP, TU Dresden — 2IFW Dresden — 3Institute of Physics, AV ČR, Prague — 4Charles University, Prague — 5Universidad del Norte, Barranquilla — 6JKU Linz — 7University of Wuerzbug — 8JGU, Mainz — 9University of Nottingham — 10University of Konstanz

In altermagnets [1], spin polarization in both crystal-structure real space and electronic-structure momentum space alternates and, consequently, it enables effects that were believed to be exclusive to ferromagnets. Many of the predicted altermagnetic phenomena [2] await their experimental confirmation. Here, we present a magneto-transport characterization of two altermagnetic materials - semiconducting MnTe [3] and metallic RuO2. We discuss which contributions to the measured transversal and longitudinal signals can be signatures of the unconventional altermagnetic phase.

[1] L. Šmejkal et al., Phys. Rev. X. 12.031042 (2022) [2] L. Šmejkal et al., Phys. Rev. X. 12.011028 (2022) [3] R. D. Gonzalez Betancourt et al., (2021) arXiv:2112.06805

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