Tuning the Anomalous Hall Effect and Antiferromagnetic Order in the Kondo-Interacting Topological Material UOTe with High-Pressure

We will report on the pressure dependence of the anomalous Hall effect and the evolution of magnetic order in uranium oxytelluride (UOTe), revealing how dimensional coupling and crystal structure governs the emergence of topology in UOTe. UOTe is a van der Waals uranium chalcogenide that hosts an antiferromagnetic ground state intertwined with a spontaneous anomalous Hall effect (AHE), despite having nearly zero net magnetization. Using microfabricated diamond anvils patterned for in situ transport, we study the evolution of both the AHE and the antiferromagnetic transition in thin (~50 nm) UOTe flakes under high pressure. Pressure provides a clean, continuous means to tune the interlayer coupling and f–d hybridization, offering insight into how correlated magnetism and Berry curvature interact in this compensated system.