Possible light-induced superconductivity in K3C60 at high temperature

Mitrano, Matteo; Cantaluppi, Alice; Nicoletti, Daniele; Kaiser, Stefan; Perucchi, A.; Lupi, S.; Di Pietro, P.; Pontiroli, D.; Riccò, M.; Clark, Stephen R.; Jaksch, D.; Cavalleri, Andrea

doi:10.1038/nature16522

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Possible light-induced superconductivity in K₃C₆₀ at high temperature

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/persons/resource/persons133781

Mitrano, Matteo
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

/persons/resource/persons133836

Cantaluppi, Alice
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany;

/persons/resource/persons133789

Nicoletti, Daniele
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany;

/persons/resource/persons133787

Kaiser, Stefan
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Clark, Stephen R.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Department of Physics, University of Bath, Claverton Down, Bath BA2 7AY, UK;
Department of Physics, Clarendon Laboratory, University of Oxford;

/persons/resource/persons133811

Cavalleri, Andrea
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany;
Department of Physics, Clarendon Laboratory, University of Oxford;

External Resource

http://dx.doi.org/10.1038/nature16522
(Publisher version)

http://arxiv.org/abs/1505.04529
(Preprint)

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Citation

Mitrano, M., Cantaluppi, A., Nicoletti, D., Kaiser, S., Perucchi, A., Lupi, S., et al. (2016). Possible light-induced superconductivity in K₃C₆₀ at high temperature. Nature. doi:10.1038/nature16522.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-A702-C

Abstract

The non-equilibrium control of emergent phenomena in solids is an important research frontier, encompassing effects such as the optical enhancement of superconductivity. Nonlinear excitation of certain phonons in bilayer copper oxides was recently shown to induce superconducting-like optical properties at temperatures far greater than the superconducting transition temperature, T_c. This effect was accompanied by the disruption of competing charge-density-wave correlations, which explained some but not all of the experimental results. Here we report a similar phenomenon in a very different compound, K₃C₆₀. By exciting metallic K₃C₆₀ with mid-infrared optical pulses, we induce a large increase in carrier mobility, accompanied by the opening of a gap in the optical conductivity. These same signatures are observed at equilibrium when cooling metallic K₃C₆₀ below T_c (20 kelvin). Although optical techniques alone cannot unequivocally identify non-equilibrium high-temperature superconductivity, we propose this as a possible explanation of our results.