All-Altermagnetic Tunnel Junction of RuO2/NiF2/RuO2

New research introduces an all-altermagnetic tunnel junction design that could advance the next generation of spintronic devices. By using altermagnets with zero net magnetic moment, researchers, including Dr. Guangxin Ni, developed a structure that avoids stray magnetic fields while achieving extremely high tunneling magnetoresistance and strong spin-filtering efficiency. The proposed RuO₂/NiF₂/RuO₂ architecture demonstrated significantly higher performance compared to traditional designs, while maintaining low energy consumption and improved functionality. These findings open new opportunities for high-performance, energy-efficient spintronic technologies.