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Pressure tuning of light-induced superconductivity in K(3)C(60)

Optical excitation at terahertz frequencies has emerged as an effective means to dynamically manipulate complex materials. In the molecular solid K(3)C(60), short mid-infrared pulses transform the high-temperature metal into a non-equilibrium state with the optical properties of a superconductor. He...

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Autores principales: Cantaluppi, A., Buzzi, M., Jotzu, G., Nicoletti, D., Mitrano, M., Pontiroli, D., Riccò, M., Perucchi, A., Di Pietro, P., Cavalleri, A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6071848/
https://www.ncbi.nlm.nih.gov/pubmed/30079096
http://dx.doi.org/10.1038/s41567-018-0134-8
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author Cantaluppi, A.
Buzzi, M.
Jotzu, G.
Nicoletti, D.
Mitrano, M.
Pontiroli, D.
Riccò, M.
Perucchi, A.
Di Pietro, P.
Cavalleri, A.
author_facet Cantaluppi, A.
Buzzi, M.
Jotzu, G.
Nicoletti, D.
Mitrano, M.
Pontiroli, D.
Riccò, M.
Perucchi, A.
Di Pietro, P.
Cavalleri, A.
author_sort Cantaluppi, A.
collection PubMed
description Optical excitation at terahertz frequencies has emerged as an effective means to dynamically manipulate complex materials. In the molecular solid K(3)C(60), 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 K(3)C(60), 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 hypothesised previously, and rather extends all the way to room temperature.
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spelling pubmed-60718482018-11-07 Pressure tuning of light-induced superconductivity in K(3)C(60) Cantaluppi, A. Buzzi, M. Jotzu, G. Nicoletti, D. Mitrano, M. Pontiroli, D. Riccò, M. Perucchi, A. Di Pietro, P. Cavalleri, A. Nat Phys Article Optical excitation at terahertz frequencies has emerged as an effective means to dynamically manipulate complex materials. In the molecular solid K(3)C(60), 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 K(3)C(60), 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 hypothesised previously, and rather extends all the way to room temperature. 2018-05-07 2018-08 /pmc/articles/PMC6071848/ /pubmed/30079096 http://dx.doi.org/10.1038/s41567-018-0134-8 Text en Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use:http://www.nature.com/authors/editorial_policies/license.html#terms
spellingShingle Article
Cantaluppi, A.
Buzzi, M.
Jotzu, G.
Nicoletti, D.
Mitrano, M.
Pontiroli, D.
Riccò, M.
Perucchi, A.
Di Pietro, P.
Cavalleri, A.
Pressure tuning of light-induced superconductivity in K(3)C(60)
title Pressure tuning of light-induced superconductivity in K(3)C(60)
title_full Pressure tuning of light-induced superconductivity in K(3)C(60)
title_fullStr Pressure tuning of light-induced superconductivity in K(3)C(60)
title_full_unstemmed Pressure tuning of light-induced superconductivity in K(3)C(60)
title_short Pressure tuning of light-induced superconductivity in K(3)C(60)
title_sort pressure tuning of light-induced superconductivity in k(3)c(60)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6071848/
https://www.ncbi.nlm.nih.gov/pubmed/30079096
http://dx.doi.org/10.1038/s41567-018-0134-8
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