Edgar Felipe Galindez Ruales
Altermagnets, i.e., materials with alternating order both in real as well as in reciprocal space are of major interest for fundamental physics as well as possible applications. This novel class of magnetically ordered materials features a large crystal electric field driven splitting of the valence states associated with the antiferromagnetically ordered sublattices. As a consequence, both spin polarized currents as well as pure spin currents are possible without any net magnetization in altermagnets. We can now utilize this type of magnetic order as well a spin source based on altermagnets. Based on the theoretical prediction of several altermagnetic materials in oxides such as RuO2 [1], we explore high transport spin-polarization and novel effects such as the spin-splitter torque and associated large magnetoresistance effects. In particular by doping typically insulating altermagnetic oxides, we can open a new class of altermagnets to transport investigations [2].
[1] A. Bose et al., Nature Electron. 5, 267 (2022)[2] E. Galindez-Ruales et al., (in preparation)