Superconductivity in a breathing kagome metals ROs₂ (R = Sc, Y, Lu).

ABSTRACT: We have successfully synthesized three osmium-based hexagonal Laves compounds ROs₂ (R = Sc, Y, Lu), and discussed their physical properties. LeBail refinement of pXRD data confirms that all compounds crystallize in the hexagonal centrosymmetric MgZn₂-type structure (P6₃/mmc, No. 194). The refined lattice parameters are a = b = 5.1791(1) Å and c = 8.4841(2) Å for ScOs₂, a = b = 5.2571(3) Å and c = 8.6613(2) Å for LuOs₂ and a = b = 5.3067(6) Å and c = 8.7904(1) Å for YOs₂. ROs₂ Laves phases can be viewed as a stacking of kagome nets interleaved with triangular layers. Temperature-dependent magnetic susceptibility, resistivity and heat capacity measurements confirm bulk superconductivity at critical temperatures, T

SUBMITTER: Gornicka K 

PROVIDER: S-EPMC10550963 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature