Orthogonalized-plane-wave band structure of polymeric sulfur nitride, (sn)x

Abstract

We present the first orthogonalized-plane-wave band structures and corresponding densities of states for two reported crystal structures of polymeric surfur nitride, (SN)x, and compare our results with experiment. We examine the band structures in light of the low-temperature stability of the metallic and superconducting states in (SN)x and conclude that this stability derives from closed Fermi surfaces introduced by electronic interchain coupling. © 1975 The American Physical Society.