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MA: Fachverband Magnetismus

MA 52: Altermagnets

MA 52.2: Talk

Friday, March 22, 2024, 09:45–10:00, EB 202

Electronic and transport properties of Rh-doped altermagnetic RuO₂ — •Lishu Zhang¹, Stefan Blügel¹, and Yuriy Mokrousov^1,2 — ¹Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany — ²Institute of Physics, Johannes Gutenberg-University Mainz, 55099 Mainz,Germany

In the past years RuO₂ has emerged as a central material for understanding the basic properties of altermagnetic materials [1]. In our work, we study the effects of Rh-doping on the properties of altermagnetic RuO₂. We use first-principles methods to simulate the effect of replacing Ru atoms with Rh and study the corresponding changes in the characteristic spin-splitting with the wave vector (k) and changes in the spin-resolved Fermi surface topology. We demonstrate that the latter has a profound impact on various transport characteristics of RuO₂ [2]. We thus promote Rh-doped RuO₂ as a promising platform for tuning the electronic properties and transport effects in altermagnetic materials.

[1] Smejkal et al., Physical Review X 12(2022): 040501.

[2] Zhou et al., arXiv:2305.01410 (2023).

L.Z. is supported by the Alexander von Humboldt foundation

Keywords: first-principles calculations; spin orbital coupling; transport properties