Antiferromagnetic resonance studies of magnetic insulator MnPS₃

This study explores the antiferromagnetic resonance spectrum of MnPS3, a candidate for magnetic topological insulators (MTIs) due to its unique magnetic properties and potential applications in next-generation electronics. The experimental setup employs quasi-optical microwaves, a superconducting split-coil magnet with optical access, and a helium cryostat, enabling precise characterization of resonance phenomena. By measuring both branches of the resonance spectrum with tunable microwave polarizations and temperature, we aim to illuminate this material's antiferromagnetic spin dynamics and potential implications for spintronic devices. Preliminary results are consistent with those of an out-of-plane easy-axis antiferromagnet, indicating that MnPS3 may support robust topological phases under specific conditions. These findings pave the way for further investigations into the interplay between magnetism and topology in this material, unlocking novel functionalities for spintronic applications and advancing the field of quantum materials.