Spin-correlated exciton-polaritons in a van der Waals magnet

Abstract

Strong coupling between light and elementary excitations is emerging as a powerful tool to engineer the properties of solid-state systems. Spin-correlated excitations that couple strongly to optical cavities promise control over collective quantum phenomena such as magnetic phase transitions, but their suitable electronic resonances have yet to be found. Here we report strong light-matter coupling in ${\text{NiPS}}_3$, a van der Waals antiferromagnet with highly correlated electronic degrees of freedom. A previously unobserved class of polaritonic quasiparticles emerges from the strong coupling between its spin-correlated excitons and the photons inside a microcavity. Detailed spectroscopic analysis in conjunction with a microscopic theory provides unique insights into the origin and interactions of these exotic magnetically coupled excitations. Our work introduces van der Waals magnets to the field of strong light-matter physics and provides a path towards the design and control of correlated electron systems via cavity quantum electrodynamics.

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• Thickness dependence of electronic structure and optical properties of a correlated van der Waals antiferromagnet NiPS${}_3$ thin film
• Large exciton binding energies in MnPS${}_3$ as a case study of vdW layered magnet
• Enhanced nonlinear interaction of polaritons via excitonic Rydberg states in monolayer WSe2

Cited by in corpus (29)

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• Roadmap for Photonics with 2D Materials
• Electronic structure of above-room-temperature van der Waals ferromagnet Fe${}_3$GaTe${}_2$
• Magnetically propagating Hund's exciton in van der Waals antiferromagnet NiPS3
• Strongly coupled magnon-plasmon polaritons in graphene- 2D ferromagnet heterostructures
• Exploring Quantum Materials with Resonant Inelastic X-Ray Scattering
• Controlling the magnetic state of the proximate quantum spin liquid $\alpha$-RuCl${}_3$ with an optical cavity
• Electronic band structure changes across the antiferromagnetic phase transition of exfoliated MnPS${}_3$ probed by $\mu$-ARPES
• Cavity engineering of solid-state materials without external driving
• Polaritonic Quantum Matter
• Magnetic Exciton-Polariton with Strongly Coupled Atomic and Photonic Anisotropies
• Magnetoelectric effect in van der Waals magnets
• Identifying band structure changes of FePS3 across the antiferromagnetic phase transition
• Distinct Magneto-Optical Response of Frenkel and Wannier Excitons in CrSBr
• Superexchange and spin-orbit coupling in monolayer and bilayer chromium trihalides
• Robust polaritons in magnetic monolayers of CrI3
• Tunable Nanophotonic Devices and Cavities based on a Two-Dimensional Magnet
• Long-lived population inversion in resonantly driven excitonic antiferromagnet
• Characteristic exciton energy scales in antiferromagnetic NiPS${}_3$
• Fermionic vs. bosonic thermalization in the phonon-driven exciton dynamics: An analytic dimensionality study
• Excitonic enhancement of cavity-mediated interactions in a two-band Hubbard model
• Exciton-spin interactions in antiferromagnetic charge-transfer insulators
• Boltzmann transport theory of magnon-exciton drag
• Magneto-Excitonic Duality From Monolayer to Trilayer CrSBr
• Probing the band structure of the strongly correlated antiferromagnet NiPS3 across its phase transition
• Crucial role of magnetic dipole and anomalous field dependence in $\mathrm{NiP}{\mathrm{S}}_3$
• Ultrafast Dynamics of Spin-Orbit Entangled Excitons Coupled to Magnetic Ordering in van der Waals Antiferromagnet NiPS3
• Crystal field tuned spin-flip luminescence in NiPS3
• Photoemission Signatures of Photoinduced Carriers and Excitons in One-Dimensional Mott Insulators