Topological Nodal Surface and Quadratic Dirac Semimetal States and van Hove Singularities in ScH₃ and LuH₃ Superconductors.

ABSTRACT: The coexistence of non-trivial topology and superconductivity in a material may induce a novel physical phenomenon known as topological superconductivity. Topological superconductors have been the subject of intense research, yet there are severe limitations in their application due to a lack of suitable materials. Topological nodal surface semimetals with nearly flat nodal surfaces near the Fermi level can be promising materials to achieve topological superconductivity. Here, we use first-principles calculations to examine the topological electronic characteristics of two new superconductors, ScH₃ and LuH₃, at both ambient and high pressures. Our studies show that both ScH₃ and LuH₃ have van Hove singularities, which confirms their superconducti

SUBMITTER: Sufyan A 

PROVIDER: S-EPMC10018709 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature