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  1. Article

    Open Access

    Full-bandwidth anisotropic Migdal-Eliashberg theory and its application to superhydrides

    Migdal-Eliashberg theory is one of the state-of-the-art methods for describing conventional superconductors from first principles. However, widely used implementations assume a constant density of states aroun...

    Roman Lucrezi, Pedro P. Ferreira, Samad Ha**azar, Hitoshi Mori in Communications Physics (2024)

  2. Article

    Open Access

    Temperature and quantum anharmonic lattice effects on stability and superconductivity in lutetium trihydride

    In this work, we resolve conflicting experimental and theoretical findings related to the dynamical stability and superconducting properties of ...

    Roman Lucrezi, Pedro P. Ferreira, Markus Aichhorn, Christoph Heil in Nature Communications (2024)

  3. Article

    Open Access

    Quantum lattice dynamics and their importance in ternary superhydride clathrates

    The quantum nature of the hydrogen lattice in superconducting hydrides can have crucial effects on the material’s properties. Taking a detailed look at the dynamic stability of the recently predicted BaSiH8 phase...

    Roman Lucrezi, Eva Kogler, Simone Di Cataldo, Markus Aichhorn in Communications Physics (2023)

  4. Article

    Open Access

    In-silico synthesis of lowest-pressure high-Tc ternary superhydrides

    We report the theoretical prediction of two high-performing hydride superconductors BaSiH8 and SrSiH8. They are thermodynamically stable above pressures of 130 and 174 GPa, respectively, and metastable below that...

    Roman Lucrezi, Simone Di Cataldo, Wolfgang von der Linden in npj Computational Materials (2022)