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Proposal for a NbPy-based superconducting spin-valve

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Abstract

Superconducting critical temperature, Tc, in proximity coupled Nb/Py/Nb trilayers with Py thickness dPy = 20–432 nm is investigated as a function of the magnetic history of the samples. An enhancement of Tc is observed when an ordered pattern of magnetic stripe domains is induced in the Py layer, namely for dPy > 300 nm. This result is interpreted as a manifestation of the domain-wall superconductivity effect. The possibility to exploit these results for the design of a NbPy-based superconducting spin-valve is discussed.

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Authors and Affiliations

  1. CNR-SPIN, c/o Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano (SA), Italy

    Carla Cirillo & Carmine Attanasio

  2. Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano (SA), Italy

    Carla Cirillo, Katsiaryna Ilyina & Carmine Attanasio

  3. Grup de Magnetisme, Departament de Física Fonamental, Facultat de Física, Universitat de Barcelona, c. Martí i Franquès 1, 08028, Barcelona, Spain

    Antoni García-Santiago & Joan Manel Hernàndez

  4. Institut de Nanociència i Nanotecnologia (IN²UB), Universitat de Barcelona, 08028, Barcelona, Spain

    Antoni García-Santiago & Joan Manel Hernàndez

Authors
  1. Carla Cirillo
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  2. Katsiaryna Ilyina
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  3. Antoni García-Santiago
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  4. Joan Manel Hernàndez
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  5. Carmine Attanasio
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Correspondence to Carla Cirillo.

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Cirillo, C., Ilyina, K., García-Santiago, A. et al. Proposal for a NbPy-based superconducting spin-valve. Eur. Phys. J. Spec. Top. 228, 741–747 (2019). https://doi.org/10.1140/epjst/e2019-800198-2

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  • DOI: https://doi.org/10.1140/epjst/e2019-800198-2

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