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Grant support

We thank P. Joyez, C. Altimiras, T. Yamamoto, J. Ankerhold, and J. Stockburger for illuminating discussions. We thank funding from Academy of Finland grant 336810, the Spanish State Research Agency through Grant RYC-2016-20778, and the EU for FET-Open contract AndQC. D.S. and J.P.P. acknowledge the support from the innovation program under the European Research Council (ERC) program (grant agreement 742559). This research was achieved using Otaniemi Research Infrastructure for Micro and Nanotechnologies (OtaNano).

Analysis of institutional authors

Yeyati AlAuthorSanchez RAuthorPark SAuthor

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December 4, 2023
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Bolometric detection of Josephson inductance in a highly resistive environment

Publicated to:Nature Communications. 14 (1): 7924-7924 - 2023-12-01 14(1), DOI: 10.1038/s41467-023-43668-3

Authors: Subero, Diego; Maillet, Olivier; Golubev, Dmitry S; Thomas, George; Peltonen, Joonas T; Karimi, Bayan; Marin-Suarez, Marco; Yeyati, Alfredo Levy; Sanchez, Rafael; Park, Sunghun; Pekola, Jukka P

Affiliations

Aalto Univ, QTF Ctr Excellence, Dept Appl Phys, PICO Grp,Sch Sci, POB 13500, Aalto 00076, Finland - Author
Departamento de Física Teórica de la Materia Condensada, Condensed Matter Physics Center (IFIMAC) and Instituto Nicolás Cabrera, Universidad Autonoma de Madrid, 28049, Madrid, Spain. - Author
PICO Group, QTF Centre of Excellence, Department of Applied Physics, Aalto University School of Science, P.O. Box 13500, 00076, Aalto, Finland. - Author
PICO Group, QTF Centre of Excellence, Department of Applied Physics, Aalto University School of Science, P.O. Box 13500, 00076, Aalto, Finland. diego.suberorengel@aalto.fi. - Author
QTF Centre of Excellence, Department of Physics, Faculty of Science, University of Helsinki, 00014, Helsinki, Finland. - Author
Univ Autonoma Madrid, Condensed Matter Phys Ctr IFIMAC, Dept Fis Teor Mat Condensada, Madrid 28049, Spain - Author
Univ Autonoma Madrid, Inst Nicolas Cabrera, Madrid 28049, Spain - Author
Univ Helsinki, Fac Sci, QTF Ctr Excellence, Dept Phys, Helsinki 00014, Finland - Author
Univ Paris Saclay, CEA, CNRS, SPEC, F-91191 Gif Sur Yvette, France - Author
Université Paris-Saclay, CEA, CNRS, SPEC, 91191, Gif-sur-Yvette, France. - Author
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Abstract

The Josephson junction is a building block of quantum circuits. Its behavior, well understood when treated as an isolated entity, is strongly affected by coupling to an electromagnetic environment. In 1983, Schmid predicted that a Josephson junction shunted by a resistance exceeding the resistance quantum RQ = h/4e2 ≈ 6.45 kΩ for Cooper pairs would become insulating since the phase fluctuations would destroy the coherent Josephson coupling. However, recent microwave measurements have questioned this interpretation. Here, we insert a small Josephson junction in a Johnson-Nyquist-type setup where it is driven by weak current noise arising from thermal fluctuations. Our heat probe minimally perturbs the junction's equilibrium, shedding light on features not visible in charge transport. We find that the Josephson critical current completely vanishes in DC charge transport measurement, and the junction demonstrates Coulomb blockade in agreement with the theory. Surprisingly, thermal transport measurements show that the Josephson junction acts as an inductor at high frequencies, unambiguously demonstrating that a supercurrent survives despite the Coulomb blockade observed in DC measurements.© 2023. The Author(s).

Keywords

cooper pairscoulomb-blockadediffusionjunctionsphase-diagramthermal agitationSuperconductor-insulator transition

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Nature Communications due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2023, it was in position 8/134, thus managing to position itself as a Q1 (Primer Cuartil), in the category Multidisciplinary Sciences. Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 11.37, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-05, the following number of citations:

  • WoS: 11
  • Scopus: 12
  • Europe PMC: 2

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-05:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 11.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 11 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 0.25.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://repositorio.uam.es/handle/10486/711925

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Finland; France.