Spin-correlated exciton-polaritons in a van der Waals magnet
| Autor: | Florian Dirnberger, Rezlind Bushati, Biswajit Datta, Ajesh Kumar, Allan H. MacDonald, Edoardo Baldini, Vinod M. Menon |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Condensed Matter - Materials Science
Condensed Matter - Strongly Correlated Electrons Strongly Correlated Electrons (cond-mat.str-el) Biomedical Engineering Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences General Materials Science Bioengineering Electrical and Electronic Engineering Condensed Matter Physics Atomic and Molecular Physics and Optics Optics (physics.optics) Physics - Optics |
| Popis: | 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 $\textrm{NiPS}_3$, 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. |
| Databáze: | OpenAIRE |
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