Hidden Chiral Superlattice in UOTe Drives Record-Breaking Spintronics
Researchers led by Su-Yang Xu and Philip Kim at Harvard have demonstrated that the collinear antiferromagnet uranium oxytelluride (UOTe) hosts a spontaneous chiral superlattice. This structural feature, arising from frozen chiral phonons, generates large Berry curvature and spin-split bands. The study reports an anomalous Hall angle of 0.14 near the 150 K Néel temperature, among the largest recorded in bulk magnets, and confirms spin-polarized currents, offering a new route for antiferromagnetic spintronics.