{"oa":1,"abstract":[{"text":"Arrays of Josephson junctions are governed by a competition between superconductivity and repulsive Coulomb interactions, and are expected to exhibit diverging low-temperature resistance when interactions exceed a critical level. Here we report a study of the transport and microwave response of Josephson arrays with interactions exceeding this level. Contrary to expectations, we observe that the array resistance drops dramatically as the temperature is decreased—reminiscent of superconducting behaviour—and then saturates at low temperature. Applying a magnetic field, we eventually observe a transition to a highly resistive regime. These observations can be understood within a theoretical picture that accounts for the effect of thermal fluctuations on the insulating phase. On the basis of the agreement between experiment and theory, we suggest that apparent superconductivity in our Josephson arrays arises from melting the zero-temperature insulator.","lang":"eng"}],"year":"2023","isi":1,"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"page":"1630-1635","author":[{"id":"FDE60288-A89D-11E9-947F-1AF6E5697425","full_name":"Mukhopadhyay, Soham","last_name":"Mukhopadhyay","first_name":"Soham"},{"last_name":"Senior","orcid":"0000-0002-0672-9295","first_name":"Jorden L","id":"5479D234-2D30-11EA-89CC-40953DDC885E","full_name":"Senior, Jorden L"},{"first_name":"Jaime","last_name":"Saez Mollejo","full_name":"Saez Mollejo, Jaime","id":"e0390f72-f6e0-11ea-865d-862393336714"},{"id":"4D495994-AE37-11E9-AC72-31CAE5697425","full_name":"Puglia, Denise","last_name":"Puglia","orcid":"0000-0003-1144-2763","first_name":"Denise"},{"first_name":"Martin","last_name":"Zemlicka","full_name":"Zemlicka, Martin","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","last_name":"Fink","first_name":"Johannes M"},{"id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","full_name":"Higginbotham, Andrew P","orcid":"0000-0003-2607-2363","last_name":"Higginbotham","first_name":"Andrew P"}],"day":"01","language":[{"iso":"eng"}],"has_accepted_license":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"intvolume":"        19","citation":{"mla":"Mukhopadhyay, Soham, et al. “Superconductivity from a Melted Insulator in Josephson Junction Arrays.” <i>Nature Physics</i>, vol. 19, Springer Nature, 2023, pp. 1630–35, doi:<a href=\"https://doi.org/10.1038/s41567-023-02161-w\">10.1038/s41567-023-02161-w</a>.","ista":"Mukhopadhyay S, Senior JL, Saez Mollejo J, Puglia D, Zemlicka M, Fink JM, Higginbotham AP. 2023. Superconductivity from a melted insulator in Josephson junction arrays. Nature Physics. 19, 1630–1635.","ieee":"S. Mukhopadhyay <i>et al.</i>, “Superconductivity from a melted insulator in Josephson junction arrays,” <i>Nature Physics</i>, vol. 19. Springer Nature, pp. 1630–1635, 2023.","ama":"Mukhopadhyay S, Senior JL, Saez Mollejo J, et al. Superconductivity from a melted insulator in Josephson junction arrays. <i>Nature Physics</i>. 2023;19:1630-1635. doi:<a href=\"https://doi.org/10.1038/s41567-023-02161-w\">10.1038/s41567-023-02161-w</a>","apa":"Mukhopadhyay, S., Senior, J. L., Saez Mollejo, J., Puglia, D., Zemlicka, M., Fink, J. M., &#38; Higginbotham, A. P. (2023). Superconductivity from a melted insulator in Josephson junction arrays. <i>Nature Physics</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41567-023-02161-w\">https://doi.org/10.1038/s41567-023-02161-w</a>","chicago":"Mukhopadhyay, Soham, Jorden L Senior, Jaime Saez Mollejo, Denise Puglia, Martin Zemlicka, Johannes M Fink, and Andrew P Higginbotham. “Superconductivity from a Melted Insulator in Josephson Junction Arrays.” <i>Nature Physics</i>. Springer Nature, 2023. <a href=\"https://doi.org/10.1038/s41567-023-02161-w\">https://doi.org/10.1038/s41567-023-02161-w</a>.","short":"S. Mukhopadhyay, J.L. Senior, J. Saez Mollejo, D. Puglia, M. Zemlicka, J.M. Fink, A.P. Higginbotham, Nature Physics 19 (2023) 1630–1635."},"title":"Superconductivity from a melted insulator in Josephson junction arrays","article_processing_charge":"Yes (in subscription journal)","publication_identifier":{"issn":["1745-2473"],"eissn":["1745-2481"]},"ddc":["530"],"scopus_import":"1","date_published":"2023-11-01T00:00:00Z","volume":19,"quality_controlled":"1","publisher":"Springer Nature","external_id":{"isi":["001054563800006"]},"date_created":"2023-08-11T07:41:17Z","month":"11","publication_status":"published","publication":"Nature Physics","project":[{"grant_number":"P33692","_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931","name":"Cavity electromechanics across a quantum phase transition"},{"_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","grant_number":"754411"},{"name":"Protected states of quantum matter","_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2"},{"name":"Protected states of quantum matter","_id":"bd5b4ec5-d553-11ed-ba76-a6eedb083344"}],"department":[{"_id":"GradSch"},{"_id":"AnHi"},{"_id":"JoFi"}],"doi":"10.1038/s41567-023-02161-w","oa_version":"Published Version","type":"journal_article","date_updated":"2024-01-29T11:27:49Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file_date_updated":"2024-01-29T11:25:38Z","ec_funded":1,"acknowledgement":"We thank D. Haviland, J. Pekola, C. Ciuti, A. Bubis and A. Shnirman for helpful feedback on the paper. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the Nanofabrication Facility. Work supported by the Austrian FWF grant P33692-N (S.M., J.S. and A.P.H.), the European Union’s Horizon 2020 Research and Innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411 (J.S.) and a NOMIS foundation research grant (J.M.F. and A.P.H.).","_id":"14032","file":[{"file_size":1977706,"creator":"dernst","access_level":"open_access","date_updated":"2024-01-29T11:25:38Z","success":1,"date_created":"2024-01-29T11:25:38Z","checksum":"1fc86d71bfbf836e221c1e925343adc5","file_name":"2023_NaturePhysics_Mukhopadhyay.pdf","file_id":"14899","relation":"main_file","content_type":"application/pdf"}],"status":"public","keyword":["General Physics and Astronomy"],"article_type":"original"}