High-Tc Conventional Superconductivity in Clathrate Hydrides: What can we learn from Electronic Structure?

ORAL

Abstract

The current record-holder for superconductivity is a lanthanum superhydride (LaH10), which crystallizes in a clathrate structure, in which hydrogen forms a dense lattice of interconnected cages. The highest Tc reported is close to room temperature (265 K). Tc's comparable, or even higher than this, have been predicted to occur in other clathrate hydrides with chemical formula XH6 and XH10, with X=Sc,Y,Mg,Ca.
In this contribution, using ab-initio Migdal-Eliashberg theory, we study the superconducting properties of this new broad class of superconductors, and trace them back to their unique electronic structure.

*We acknowledge funding from the Austrian Science Fund FWF projects No. J 3806-N36 and P 30269-N36 and Fondo Ateneo Sapienza 2017.

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Presenters

  • Lilia Boeri

    • Sapienza University of Rome

Authors

  • Lilia Boeri

    • Sapienza University of Rome

  • Christoph Heil

    • Institute for Theoretical and Computational Physics, Graz Universtity of Technology

  • Simone Di Cataldo

    • Institute for Theoretical and Computational Physics, Graz Universtity of Technology

  • Giovanni Bachelet

    • Sapienza University of Rome