Cavity-mediated thermal control of metal-to-insulator transition in 1T-TaS2

Jarc G, Mathengattil SY, Montanaro A, Giusti F, Rigoni EM, Sergo R, Fassioli Olsen F, Winnerl S, Dal Zilio S, Mihailovic D, Prelovšek P, Eckstein M, Fausti D (2023)

Publication Type: Journal article

Publication year: 2023


Book Volume: 622

Pages Range: 487-492

Journal Issue: 7983

DOI: 10.1038/s41586-023-06596-2


Placing quantum materials into optical cavities provides a unique platform for controlling quantum cooperative properties of matter, by both weak and strong light–matter coupling1,2. Here we report experimental evidence of reversible cavity control of a metal-to-insulator phase transition in a correlated solid-state material. We embed the charge density wave material 1T-TaS2 into cryogenic tunable terahertz cavities3 and show that a switch between conductive and insulating behaviours, associated with a large change in the sample temperature, is obtained by mechanically tuning the distance between the cavity mirrors and their alignment. The large thermal modification observed is indicative of a Purcell-like scenario in which the spectral profile of the cavity modifies the energy exchange between the material and the external electromagnetic field. Our findings provide opportunities for controlling the thermodynamics and macroscopic transport properties of quantum materials by engineering their electromagnetic environment.

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Jarc, G., Mathengattil, S.Y., Montanaro, A., Giusti, F., Rigoni, E.M., Sergo, R.,... Fausti, D. (2023). Cavity-mediated thermal control of metal-to-insulator transition in 1T-TaS2. Nature, 622(7983), 487-492.


Jarc, Giacomo, et al. "Cavity-mediated thermal control of metal-to-insulator transition in 1T-TaS2." Nature 622.7983 (2023): 487-492.

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