Possible light-induced superconductivity in K3 C60 at high temperature

M. Mitrano, A. Cantaluppi, D. Nicoletti, S. Kaiser, A. Perucchi, S. Lupi, P. Di Pietro, D. Pontiroli, M. Riccò, S. R. Clark, D. Jaksch, A. Cavalleri

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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 (refs 4, 5, 6). 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, K 3 C 60. By exciting metallic K 3 C 60 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 K 3 C 60 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.

Original languageEnglish
Pages (from-to)461-464
Number of pages4
JournalNature
Volume530
Issue number7591
Early online date8 Feb 2016
DOIs
Publication statusPublished - 25 Feb 2016

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superconductivity
copper oxides
carrier mobility
phonons
transition temperature
signatures
cooling
optical properties
conductivity
augmentation
pulses
excitation
temperature

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Mitrano, M., Cantaluppi, A., Nicoletti, D., Kaiser, S., Perucchi, A., Lupi, S., ... Cavalleri, A. (2016). Possible light-induced superconductivity in K3 C60 at high temperature. Nature, 530(7591), 461-464. https://doi.org/10.1038/nature16522

Possible light-induced superconductivity in K3 C60 at high temperature. / Mitrano, M.; Cantaluppi, A.; Nicoletti, D.; Kaiser, S.; Perucchi, A.; Lupi, S.; Di Pietro, P.; Pontiroli, D.; Riccò, M.; Clark, S. R.; Jaksch, D.; Cavalleri, A.

In: Nature, Vol. 530, No. 7591, 25.02.2016, p. 461-464.

Research output: Contribution to journalArticle

Mitrano, M, Cantaluppi, A, Nicoletti, D, Kaiser, S, Perucchi, A, Lupi, S, Di Pietro, P, Pontiroli, D, Riccò, M, Clark, SR, Jaksch, D & Cavalleri, A 2016, 'Possible light-induced superconductivity in K3 C60 at high temperature', Nature, vol. 530, no. 7591, pp. 461-464. https://doi.org/10.1038/nature16522
Mitrano M, Cantaluppi A, Nicoletti D, Kaiser S, Perucchi A, Lupi S et al. Possible light-induced superconductivity in K3 C60 at high temperature. Nature. 2016 Feb 25;530(7591):461-464. https://doi.org/10.1038/nature16522
Mitrano, M. ; Cantaluppi, A. ; Nicoletti, D. ; Kaiser, S. ; Perucchi, A. ; Lupi, S. ; Di Pietro, P. ; Pontiroli, D. ; Riccò, M. ; Clark, S. R. ; Jaksch, D. ; Cavalleri, A. / Possible light-induced superconductivity in K3 C60 at high temperature. In: Nature. 2016 ; Vol. 530, No. 7591. pp. 461-464.
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