Excitations in a superconducting Coulombic energy gap

Juan Carlos Estrada Saldaña; Alexandros Vekris; Luka Pavešić; Peter Krogstrup; Rok Žitko; Kasper Grove-Rasmussen; Jesper Nygård

doi:10.1038/s41467-022-29634-5

Nature Communications (Apr 2022)

Excitations in a superconducting Coulombic energy gap

Juan Carlos Estrada Saldaña,
Alexandros Vekris,
Luka Pavešić,
Peter Krogstrup,
Rok Žitko,
Kasper Grove-Rasmussen,
Jesper Nygård

Affiliations

Juan Carlos Estrada Saldaña: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen
Alexandros Vekris: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen
Luka Pavešić: Jožef Stefan Institute
Peter Krogstrup: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen
Rok Žitko: Jožef Stefan Institute
Kasper Grove-Rasmussen: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen
Jesper Nygård: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen

DOI: https://doi.org/10.1038/s41467-022-29634-5
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 8

Abstract

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The fate of Yu-Shiba-Rusinov states in the presence of a strong Coulomb repulsion in a superconductor remains unknown. Here, the authors couple a quantum dot to a superconducting island with a tunable Coulomb repulsion, where they find a singlet many-body state which, by a strong Coulomb repulsion, changes to a two-body state.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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