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  Possible light-induced superconductivity in K3C60 at high temperature

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, 530(7591), 461-464. doi:10.1038/nature16522.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-A702-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-5530-2
Genre: Journal Article

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http://dx.doi.org/10.1038/nature16522 (Publisher version)
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http://arxiv.org/abs/1505.04529 (Preprint)
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 Creators:
Mitrano, Matteo1, Author              
Cantaluppi, Alice1, 2, Author              
Nicoletti, Daniele1, 2, Author              
Kaiser, Stefan1, Author              
Perucchi, A.3, Author
Lupi, S.4, Author
Di Pietro, P.3, Author
Pontiroli, D.5, Author
Riccò, M.5, Author
Clark, Stephen R.1, 6, 7, Author
Jaksch, D.7, 8, Author
Cavalleri, Andrea1, 2, 7, Author              
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany, ou_persistent22              
3INSTM UdR Trieste-ST and Elettra–Sincrotrone Trieste S.C.p.A., Area Science Park, 34012 Basovizza, Trieste, Italy, ou_persistent22              
4CNR-IOM and Dipartimento di Fisica, Università di Roma “Sapienza”, Piazzale A. Moro 2, 00185 Roma, Italy, ou_persistent22              
5Dipartimento di Fisica e Scienze della Terra, Università degli Studi di Parma, Parco Area delle Scienze, 7/a, 43124 Parma, Italy, ou_persistent22              
6Department of Physics, University of Bath, Claverton Down, Bath BA2 7AY, UK, ou_persistent22              
7Department of Physics, Clarendon Laboratory, University of Oxford, ou_persistent22              
8Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore, ou_persistent22              

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Free keywords: Condensed Matter; Superconductivity; Strongly Correlated Electrons
 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, Tc. 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 Tc (20 kelvin). Although optical techniques alone cannot unequivocally identify non-equilibrium high-temperature superconductivity, we propose this as a possible explanation of our results.

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Language(s): eng - English
 Dates: 2015-05-182015-08-092015-12-042016-02-082016-02-25
 Publication Status: Published in print
 Pages: 17
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: arXiv: 1505.04529
DOI: 10.1038/nature16522
PMC: PMC4820655
 Degree: -

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Title: Nature
  Abbreviation : Nature
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 530 (7591) Sequence Number: - Start / End Page: 461 - 464 Identifier: ISSN: 0028-0836
CoNE: /journals/resource/954925427238