Bialek, M.Zhang, J.Yu, H.Ansermet, J. -Ph.2021-06-192021-06-192021-06-192021-04-0910.1103/PhysRevApplied.15.044018https://infoscience.epfl.ch/handle/20.500.14299/179025WOS:000656776000002Strong coupling of electromagnetic cavity fields with antiferromagnetic spin waves in hematite (alpha-Fe2O3) is achieved above room temperature. A cube of hematite is placed in a metallic tube and the transmission is measured, using a continuous-wave terahertz spectrometer. The spectra, collected as a function of the temperature, reveal the formation of magnetic polaritons.Physics, AppliedPhysicsmagnonpolaritonsmodestext::journal::journal article::research article