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Article

Topological Gauge Theory of Josephson Junction Arrays: The Discovery of Superinsulation

by
Maria Cristina Diamantini
NiPS Laboratory, INFN and Dipartimento di Fisica, University of Perugia, Via A. Pascoli, I-06100 Perugia, Italy
Condens. Matter 2023, 8(4), 97; https://doi.org/10.3390/condmat8040097
Submission received: 24 September 2023 / Revised: 26 October 2023 / Accepted: 30 October 2023 / Published: 16 November 2023
(This article belongs to the Special Issue Selected Papers from the 8th International Conference on Superconductivity and Magnetism (ICSM2023))
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Abstract

We review the topological gauge theory description of Josephson junction arrays (JJA), fabricated systems which exhibit the superconductor-to-insulator transition (SIT). This description revealed the topological nature of the phases around the SIT and led to the discovery of a new state of matter, the superinsulator, characterized by infinite resistance, even at finite temperatures, due to linear confinement of electric charges. This discovery is particularly relevant for the physics of superconducting films with emergent granularity, which are modeled with JJAs and share the same phase diagram.
Keywords: Josephson junction arrays; topological field theory; topological phases of matter; superinsulators Josephson junction arrays; topological field theory; topological phases of matter; superinsulators

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MDPI and ACS Style

Diamantini, M.C. Topological Gauge Theory of Josephson Junction Arrays: The Discovery of Superinsulation. Condens. Matter 2023, 8, 97. https://doi.org/10.3390/condmat8040097

AMA Style

Diamantini MC. Topological Gauge Theory of Josephson Junction Arrays: The Discovery of Superinsulation. Condensed Matter. 2023; 8(4):97. https://doi.org/10.3390/condmat8040097

Chicago/Turabian Style

Diamantini, Maria Cristina. 2023. "Topological Gauge Theory of Josephson Junction Arrays: The Discovery of Superinsulation" Condensed Matter 8, no. 4: 97. https://doi.org/10.3390/condmat8040097

APA Style

Diamantini, M. C. (2023). Topological Gauge Theory of Josephson Junction Arrays: The Discovery of Superinsulation. Condensed Matter, 8(4), 97. https://doi.org/10.3390/condmat8040097

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