Electronic structure theory of HS: Plane-wave-like valence states, density-of-states peak and its guaranteed proximity to the Fermi level
This paper elucidates the mechanism behind the high transition temperature in sulfur superhydride HS by demonstrating that its valence states are plane-wave-like, leading to a density-of-states peak near the Fermi level through the hybridization of specific plane waves driven by the adjacency of Jones' large zone to the Fermi surface.