Strong Coupling of Antiferromagnetic Resonance with Subterahertz Cavity Fields
M. Białek, Jianyu Zhang, Haiming Yu, Jean‐Philippe Ansermet
Abstract
Strong coupling of electromagnetic cavity fields with antiferromagnetic spin waves in hematite ($\ensuremath{\alpha}$-${\mathrm{Fe}}_{2}{\mathrm{O}}_{3}$) 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.
Topics & Concepts
AntiferromagnetismPolaritonHematiteTerahertz radiationCondensed matter physicsCoupling (piping)Resonance (particle physics)Materials scienceSpectrometerPhysicsMagnetic fieldOpticsAtomic physicsQuantum mechanicsMetallurgyStrong Light-Matter InteractionsQuantum and electron transport phenomenaTopological Materials and Phenomena