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Interplay of Andreev Reflection and Coulomb Blockade in Hybrid Superconducting Single-Electron Transistors.
Sobral Rey, Laura; Ohnmacht, David Christian; Winkelmann, Clemens B; Siewert, Jens; Belzig, Wolfgang; Scheer, Elke.
Afiliación
  • Sobral Rey L; Physics Department, University of Konstanz, 78457 Konstanz, Germany.
  • Ohnmacht DC; Physics Department, University of Konstanz, 78457 Konstanz, Germany.
  • Winkelmann CB; Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, 38000 Grenoble, France.
  • Siewert J; University of the Basque Country UPV/EHU and EHU Quantum Center, 48080 Bilbao, Spain.
  • Belzig W; Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain.
  • Scheer E; Physics Department, University of Konstanz, 78457 Konstanz, Germany.
Phys Rev Lett ; 132(5): 057001, 2024 Feb 02.
Article en En | MEDLINE | ID: mdl-38364128
ABSTRACT
We study the interplay between Coulomb blockade and superconductivity in a tunable superconductor-superconductor-normal-metal single-electron transistor. The device is realized by connecting the superconducting island via an oxide barrier to the normal-metal lead and with a break junction to the superconducting lead. The latter enables Cooper pair transport and (multiple) Andreev reflection. We show that these processes are relevant also far above the superconducting gap and that signatures of Coulomb blockade may reoccur at high bias while they are absent for small bias in the strong-coupling regime. Our experimental findings agree with simulations using a rate equation approach in combination with the full counting statistics of multiple Andreev reflection.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos
Texto completo
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Imprimir
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos