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Cited by 102Fullerene Chemistry and ApplicationsPhysics of Superconductivity and MagnetismOrganic and Molecular Conductors Research

Pressure tuning of light-induced superconductivity in K3C60

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Cantaluppi, A., Buzzi, M., Jotzu, G., Nicoletti, D., Mitrano, M., Pontiroli, D., Riccò, M., Perucchi, A. +2 more·2018·Nature Physics
DOI 10.1038/s41567-018-0134-8PMC PMC6071848
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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 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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Crossref · 10.1038/s41567-018-0134-8

Cites

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  • The spectrum with P_exp looks like that of a superconductor: σ_s1(ω; P_exp) falls to near zero below ħω ≈ 10 meV, σ_s2(ω; P_exp) is enhanced at low frequencies, and a Drude-Lorentz fit yields a carrier relaxation rate γ = 0.

    “The spectrum with P exp looks like that of a superconductor [6-8]: σ s1 ( ω ; P exp ) falls to near zero below ℏ ω ≈ 10 meV, σ s2 ( ω ; P exp ) is enhanced at low frequencies, and a Drude-Lorentz fit yields a carrier relaxation rate γ = 0”

    From Optical Saturation Produces Spurious Evidence for Photoinduced Superconductivity in K 3 C 60 (2023) · cites this paper as [7]

    The discussion of Fig. 1d reports a gapped σ1(ω) and divergent low-frequency σ2(ω) in the photoexcited state, supporting the superconducting-like description; it places the gap at about 12 meV rather than exactly 10 meV. The discussion of Fig. 5 says a Drude–Lorentz fit was used, but does not report a fitted carrier relaxation rate of γ = 0. No page numbers are available in our copy. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

  • A Drude-Lorentz fit to the P_sat spectrum yields ħγ = 1.2 meV, which is about a third of the equilibrium value and 4 times larger than the previously reported upper bound.

    “A Drude-Lorentz fit to this spectrum yields ℏ γ = 1 . 2 meV [22], which is about a third of the equilibrium value [9] and 4 times larger than the previously reported upper bound [7].”

    From Optical Saturation Produces Spurious Evidence for Photoinduced Superconductivity in K 3 C 60 (2023) · cites this paper as [7]

    The passage discussing fits to Fig. 3 (section labelled Abstract; page unavailable) says the authors used a Drude–Lorentz fit for the transient optical response. It reports an extrapolated low-frequency conductivity, but does not give ℏγ = 1.2 meV for a P_sat spectrum. The equilibrium comparison and earlier upper bound carry separate citations in the citing sentence, so they are not assessed here. (LLM, conf=0.78)

    Experimental — accuracy not yet measured

  • The evidence for photoinduced superconductivity in K3C60 is susceptible to these distortions.

    “we describe how the evidence for photoinduced superconductivity in K3C60 [6-9] is susceptible to these distortions”

    From Optical Saturation Produces Spurious Evidence for Photoinduced Superconductivity in K 3 C 60 (2023) · cites this paper as [7]

    In the passage discussing the optical results of Ref. 8 (section labeled Abstract; page unavailable), the paper says optical properties alone could not uniquely distinguish a superconductor from a perfect conductor. That supports a narrower concern about interpreting the evidence, but the paper does not identify the unspecified “distortions” or say the evidence is susceptible to them. (LLM, conf=0.72)

    Experimental — accuracy not yet measured

  • The evidence for photoinduced superconductivity in K3C60 hinges on these similarities.

    “The evidence for photoinduced superconductivity in K3C60 hinges on these similarities [6-9].”

    From Optical Saturation Produces Spurious Evidence for Photoinduced Superconductivity in K 3 C 60 (2023) · cites this paper as [7]

  • The optical properties reported for the photoexcited state with T > Tc at ∆t = 1 ps are qualitatively similar to those of the equilibrium superconducting state.

    “The optical properties reported for the photoexcited state with T > T c at ∆ t = 1 ps are qualitatively similar to those of the equilibrium superconducting state.”

    From Optical Saturation Produces Spurious Evidence for Photoinduced Superconductivity in K 3 C 60 (2023) · cites this paper as [7]

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Cites

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Research works printed but not linked: 1

  1. [22]Schilling JS High-Pressure Effects Handbook of High-Temperature Superconductivity Springer New York 2006 427 462

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Authors
Cantaluppi, A., Buzzi, M., Jotzu, G., Nicoletti, D., Mitrano, M., Pontiroli, D., Riccò, M., Perucchi, A., Di Pietro, P., & Cavalleri, A.
Affiliations
  • Max Planck Institute for the Structure and Dynamics of Matter (DE)
  • University of Parma (IT)
  • Elettra-Sincrotrone Trieste S.C.p.A. (IT)
  • University of Oxford (GB)
Corresponding author
Cavalleri, A.
ORCID
Venue
Nature Physics
Publisher
Springer Science and Business Media LLC
Published
2018-05-07
Volume
14
Issue
8
Pages
837-841
ISSN
  • 1745-2473 (ISSN-L)
  • 1745-2481
DOI
10.1038/s41567-018-0134-8
PMC
PMC6071848
OpenAlex
W2614412594
Cited by
102
References
27
Citations by year
2026: 7 · 2025: 12 · 2024: 8 · 2023: 15 · 2022: 12 · 2021: 22 · 2020: 14 · 2019: 10 · 2018: 2
FWCI
4.92
Type
journal article
Language
en
Update notices
correction (2018-05-15)
Open access
Licence
www.springer.com/tdm (tdm)
Locations
  • Nature Physics (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Chemistry › Organic Chemistry › Fullerene Chemistry and Applications
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Physics of Superconductivity and Magnetism
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Organic and Molecular Conductors Research
Keywords
K3C60, light-induced superconductivity, hydrostatic pressure, mid-infrared pulses, nonequilibrium superconductivity, electronic bandwidth, electron pairing, molecular crystals, high-temperature superconductivity

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