Superconducting nonlinear transport in optically driven high-temperature K3C60

Wang, E.; Adelinia, J.; Chavez Cervantes, M.; Matsuyama, T.; Fechner, M.; Buzzi, M.; Meier, G.; Cavalleri, A.

doi:10.1038/s41467-023-42989-7

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Superconducting nonlinear transport in optically driven high-temperature K₃C₆₀

MPS-Authors

Wang, E.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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Adelinia, J.
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Chavez Cervantes, M.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Matsuyama, T.
Ultrafast Electronics, Scientific Service Units, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Fechner, M.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Buzzi, M.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Meier, G.
Ultrafast Electronics, Scientific Service Units, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Cavalleri, A.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Department of Physics, Clarendon Laboratory, University of Oxford;

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https://arxiv.org/abs/2301.06425
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https://doi.org/10.1038/s41467-023-42989-7
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Citation

Wang, E., Adelinia, J., Chavez Cervantes, M., Matsuyama, T., Fechner, M., Buzzi, M., et al. (2023). Superconducting nonlinear transport in optically driven high-temperature K₃C₆₀. Nature Communications, 14(1): 7233. doi:10.1038/s41467-023-42989-7.

Cite as: https://hdl.handle.net/21.11116/0000-000D-E96B-5

Abstract

Optically driven quantum materials exhibit a variety of non-equilibrium functional phenomena, which to date have been primarily studied with ultrafast optical, X-Ray and photo-emission spectroscopy. However, little has been done to characterize their transient electrical responses, which are directly associated with the functionality of these materials. Especially interesting are linear and nonlinear current-voltage characteristics at frequencies below 1 THz, which are not easily measured at picosecond temporal resolution. Here, we report on ultrafast transport measurements in photo-excited K₃C₆₀. Thin films of this compound were connected to photo-conductive switches with co-planar waveguides. We observe characteristic nonlinear current-voltage responses, which in these films point to photo-induced granular superconductivity. Although these dynamics are not necessarily identical to those reported for the powder samples studied so far, they provide valuable new information on the nature of the light-induced superconducting-like state above equilibrium T_c. Furthermore, integration of non-equilibrium superconductivity into optoelectronic platforms may lead to integration in high-speed devices based on this effect.