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  1. Article

    Open Access

    Nodal multigap superconductivity in the anisotropic iron-based compound RbCa2Fe4As4F2

    The 12442 compounds are a recently discovered family of iron-based superconductors, that share several features with the cuprates due to their strongly anisotropic structure, but are so far poorly understood. ...

    Daniele Torsello, Erik Piatti, Giovanni Alberto Ummarino… in npj Quantum Materials (2022)

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  2. No Access

    Article

    Eliashberg Analysis of the Electrodynamic Response of Ba(Fe1−xRhx)2As2 Across the s± to s++ Order Parameter Transition

    We report on the Eliashberg analysis of the electrodynamic response of Ba(Fe1−xRhx)2As2 single crystals across the disorder-induced s± to s++ transition. We previously experimentally identified the transition by ...

    Daniele Torsello, Giovanni Alberto Ummarino… in Journal of Superconductivity and Novel Mag… (2020)

  3. Article

    Open Access

    Superconductor in a weak static gravitational field

    We provide the detailed calculation of a general form for Maxwell and London equations that takes into account gravitational corrections in linear approximation. We determine the possible alteration of a stati...

    Giovanni Alberto Ummarino, Antonio Gallerati in The European Physical Journal C (2017)

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  4. Article

    Open Access

    Two-gap superconductivity in the Fe-1111 superconductor LaFeAsO1−x F x : A point-contact Andreev-reflection study

    Point-contact Andreev-reflection (PCAR) experiments were performed in the Fe-1111 layered superconductor LaFeAsO0.9F0.1 with resistive T c ...

    Renato S. Gonnelli, Mauro Tortello, Dario Daghero… in Central European Journal of Physics (2009)

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