Electronic and Structural Tuning of Transport Properties of Altermagnetic RuO₂

Altermagnetism, a recently identified magnetic phase, combines the spin polarization of ferromagnets with the zero net magnetization characteristic of antiferromagnets, offering great potential for spintronic and magnetic memory technologies. One notable candidate material is RuO₂, whose altermagnetic nature has been recently identified; however, experimental findings regarding its properties remain inconsistent. In this study, we investigated how the magnetization, Anomalous Hall Conductivity (AHC), and Spin Hall Conductivity (SHC) of RuO₂ respond to various electronic and structural tuning parameters such as the Hubbard-U parameter, Fermi level, doping, and strain. We demonstrate that RuO₂ exhibits prominent AHC and SHC values, comparable to those of conventional magnetic materials, despite its zero net magnetization and relatively weak spin–orbit coupling. Furthermore, we show that these properties are highly tunable. Our results highlight RuO₂’s promise for spintronic applications and guide the design of new altermagnets. Future work will examine the effects of dopants, defects, and the analysis of other transition-metal compounds.