Cavity-controlled magneto-optical properties of a strongly coupled van der Waals magnet
arXiv (Cornell University)(2023)
Abstract
Controlling the properties of quantum materials with light is of fundamental and technological importance. While high-power lasers may achieve this goal, more practical strategies aim to exploit the strong coupling of light and matter in optical cavities, which has recently been shown to affect elemental physical phenomena, like superconductivity, phase transitions, and topological protection. Here we report the capacity of strong light-matter coupling to modify and control the magneto-optical properties of magnets. Tuning the hybridization of magnetic excitons and cavity photons allows us to realize distinct optical signatures of external magnetic fields and magnons in the archetypal van der Waals magnetic semiconductor CrSBr. These results highlight novel directions for cavity-controlled magneto-optics and the manipulation of quantum material properties by strong light-matter coupling.
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Key words
der waals magneto-optical,cavity-controlled
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