Prediction of high-<i>T</i> _<i>c</i> superconductivity in heavy rare earth metals compressed Be-H alloy backbone.

ABSTRACT: As the lightest element, hydrogen has the potential to become a room temperature superconductor upon metallization, though achieving this remains a significant challenge. Hydrogen-rich compounds leveraging the hydrogen pre-compression effect may offer promising alternatives for high-temperature superconductivity. In this study, we incorporated heavy rare earth elements into a fluorite-type Be-H alloy framework, resulting in the formation of XBeH₈ (where X = Tm, Yb, Lu). This approach led to enhanced critical temperatures (T _c ) while maintaining stability at lower pressures. Specifically, TmBeH₈ exhibits a T _c of 41-48 K at 80 GPa, whereas YbBeH₈, which stabilizes at 100 GPa, demonstrates a T

SUBMITTER: Li Y 

PROVIDER: S-EPMC11928861 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature