---
_id: '14032'
abstract:
- lang: eng
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.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
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.).
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Soham
full_name: Mukhopadhyay, Soham
id: FDE60288-A89D-11E9-947F-1AF6E5697425
last_name: Mukhopadhyay
- first_name: Jorden L
full_name: Senior, Jorden L
id: 5479D234-2D30-11EA-89CC-40953DDC885E
last_name: Senior
orcid: 0000-0002-0672-9295
- first_name: Jaime
full_name: Saez Mollejo, Jaime
id: e0390f72-f6e0-11ea-865d-862393336714
last_name: Saez Mollejo
- first_name: Denise
full_name: Puglia, Denise
id: 4D495994-AE37-11E9-AC72-31CAE5697425
last_name: Puglia
orcid: 0000-0003-1144-2763
- first_name: Martin
full_name: Zemlicka, Martin
id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
last_name: Zemlicka
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
- first_name: Andrew P
full_name: Higginbotham, Andrew P
id: 4AD6785A-F248-11E8-B48F-1D18A9856A87
last_name: Higginbotham
orcid: 0000-0003-2607-2363
citation:
ama: Mukhopadhyay S, Senior JL, Saez Mollejo J, et al. Superconductivity from a
melted insulator in Josephson junction arrays. Nature Physics. 2023;19:1630-1635.
doi:10.1038/s41567-023-02161-w
apa: Mukhopadhyay, S., Senior, J. L., Saez Mollejo, J., Puglia, D., Zemlicka, M.,
Fink, J. M., & Higginbotham, A. P. (2023). Superconductivity from a melted
insulator in Josephson junction arrays. Nature Physics. Springer Nature.
https://doi.org/10.1038/s41567-023-02161-w
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.” Nature Physics.
Springer Nature, 2023. https://doi.org/10.1038/s41567-023-02161-w.
ieee: S. Mukhopadhyay et al., “Superconductivity from a melted insulator
in Josephson junction arrays,” Nature Physics, vol. 19. Springer Nature,
pp. 1630–1635, 2023.
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.
mla: Mukhopadhyay, Soham, et al. “Superconductivity from a Melted Insulator in Josephson
Junction Arrays.” Nature Physics, vol. 19, Springer Nature, 2023, pp. 1630–35,
doi:10.1038/s41567-023-02161-w.
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.
date_created: 2023-08-11T07:41:17Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2024-01-29T11:27:49Z
day: '01'
ddc:
- '530'
department:
- _id: GradSch
- _id: AnHi
- _id: JoFi
doi: 10.1038/s41567-023-02161-w
ec_funded: 1
external_id:
isi:
- '001054563800006'
file:
- access_level: open_access
checksum: 1fc86d71bfbf836e221c1e925343adc5
content_type: application/pdf
creator: dernst
date_created: 2024-01-29T11:25:38Z
date_updated: 2024-01-29T11:25:38Z
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file_size: 1977706
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success: 1
file_date_updated: 2024-01-29T11:25:38Z
has_accepted_license: '1'
intvolume: ' 19'
isi: 1
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: 1630-1635
project:
- _id: 0aa3608a-070f-11eb-9043-e9cd8a2bd931
grant_number: P33692
name: Cavity electromechanics across a quantum phase transition
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: eb9b30ac-77a9-11ec-83b8-871f581d53d2
name: Protected states of quantum matter
- _id: bd5b4ec5-d553-11ed-ba76-a6eedb083344
name: Protected states of quantum matter
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
issn:
- 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Superconductivity from a melted insulator in Josephson junction arrays
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 19
year: '2023'
...