Proximity-Induced Superconductivity in Atomically Precise Nanographene on Ag/Nb(110).


Journal

ACS materials letters
ISSN: 2639-4979
Titre abrégé: ACS Mater Lett
Pays: United States
ID NLM: 101747116

Informations de publication

Date de publication:
03 Apr 2023
Historique:
received: 10 10 2022
accepted: 16 02 2023
medline: 11 4 2023
entrez: 10 4 2023
pubmed: 11 4 2023
Statut: epublish

Résumé

Obtaining a robust superconducting state in atomically precise nanographene (NG) structures by proximity to a superconductor could foster the discovery of topological superconductivity in graphene. On-surface synthesis of such NGs has been achieved on noble metals and metal oxides; however, it is still absent on superconductors. Here, we present a synthetic method to induce superconductivity of polymeric chains and NGs adsorbed on the superconducting Nb(110) substrate covered by thin Ag films. Using atomic force microscopy at low temperature, we characterize the chemical structure of each subproduct formed on the superconducting Ag layer. Scanning tunneling spectroscopy further allows us to elucidate the electronic properties of these nanostructures, which consistently show a superconducting gap.

Identifiants

pubmed: 37034384
doi: 10.1021/acsmaterialslett.2c00955
pmc: PMC10074385
doi:

Types de publication

Journal Article

Langues

eng

Pagination

1083-1090

Informations de copyright

© 2023 The Authors. Published by American Chemical Society.

Déclaration de conflit d'intérêts

The authors declare no competing financial interest.

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Auteurs

Jung-Ching Liu (JC)

Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.

Rémy Pawlak (R)

Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.

Xing Wang (X)

Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland.

Hongyan Chen (H)

Physikalisches Institut, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, Karlsruhe 76131, Germany.

Philipp D'Astolfo (P)

Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.

Carl Drechsel (C)

Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.

Ping Zhou (P)

Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland.

Robert Häner (R)

Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland.

Silvio Decurtins (S)

Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland.

Ulrich Aschauer (U)

Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland.

Shi-Xia Liu (SX)

Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland.

Wulf Wulfhekel (W)

Physikalisches Institut, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, Karlsruhe 76131, Germany.

Ernst Meyer (E)

Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.

Classifications MeSH