Exciton-magnon splitting in the van der Waals antiferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>MnPS</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math> unveiled by second-harmonic generation
Ziqian Wang, Xiao-Xiao Zhang, Yuki Shiomi, T. Arima, Naoto Nagaosa, Yoshinori Tokura, N. Ogawa
Abstract
A substantial interaction is discovered between two correlated quasiparticles, excitons and magnons, within a van der Waals layered antiferromagnet. Symmetry analysis based on nonlinear optical spectroscopy reveals the unconventional splitting of magnons induced by the excitonic perturbation.
Topics & Concepts
van der Waals forceAntiferromagnetismMagnonExcitonQuasiparticlePhysicsSpectroscopyCondensed matter physicsQuantum mechanicsFerromagnetismMoleculeSuperconductivityQuantum and electron transport phenomenaPhysics of Superconductivity and MagnetismMechanical and Optical Resonators