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  Pressure tuning of light-induced superconductivity in K3C60

Cantaluppi, A., Buzzi, M., Jotzu, G., Nicoletti, D., Mitrano, M., Pontiroli, D., et al. (2018). Pressure tuning of light-induced superconductivity in K3C60. Nature Physics, 14(8), 837-841. doi:10.1038/s41567-018-0134-8.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-45AB-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-BF49-4
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 Creators:
Cantaluppi, A.1, 2, Author              
Buzzi, M.1, 2, Author              
Jotzu, G.1, Author              
Nicoletti, D.1, 2, Author              
Mitrano, M.1, Author              
Pontiroli, D.3, Author
Riccò, M.3, Author
Perucchi, A.4, Author
Pietro, P. Di4, Author
Cavalleri, A.1, 2, 5, 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, ou_persistent22              
3Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università degli Studi di Parma, ou_persistent22              
4NSTM UdR Trieste-ST and Elettra–Sincrotrone Trieste, ou_persistent22              
5Department of Physics, Oxford University, Clarendon Laboratory, ou_persistent22              

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 Abstract: Optical excitation at terahertz frequencies has emerged as an effective means to dynamically manipulate complex materials. In the molecular solid K3C60, short mid-infrared pulses transform the high-temperature metal into a non-equilibrium state with the optical properties of a superconductor. Here we tune this effect with hydrostatic pressure and find that the superconducting-like features gradually disappear at around 0.3 GPa. Reduction with pressure underscores the similarity with the equilibrium superconducting phase of K3C60, in which a larger electronic bandwidth induced by pressure is also detrimental for pairing. Crucially, our observation excludes alternative interpretations based on a high-mobility metallic phase. The pressure dependence also suggests that transient, incipient superconductivity occurs far above the 150 K hypothesized previously, and rather extends all the way to room temperature.

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Language(s): eng - English
 Dates: 2017-05-152018-04-062018-05-072018-08
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1038/s41567-018-0134-8
arXiv: 1705.05939
 Degree: -

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Project name : The research leading to these results received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007- 2013)/ERC Grant Agreement 319286 (QMAC). We acknowledge support from the Deutsche Forschungsgemeinschaft via the excellence cluster The Hamburg Centre for Ultrafast Imaging—Structure, Dynamics and Control of Matter at the Atomic Scale and Priority Programme SFB925. M.B. acknowledges financial support from the Swiss National Science Foundation through an Early Postdoc Mobility Grant (P2BSP2_165352).
Grant ID : 319286
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)

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Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
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Publ. Info: London : Nature Pub. Group
Pages: 5 Volume / Issue: 14 (8) Sequence Number: - Start / End Page: 837 - 841 Identifier: ISSN: 1745-2473
CoNE: /journals/resource/1000000000025850