Iuliacumite: A Novel Chemical Short-Range Order in a Two-Dimensional Wurtzite Single Monolayer InAs1–xSbx Shell on InAs Nanowires

A chemical short-range order is found in single monolayer InAs1–xSbx shells, which inherit a wurtzite structure from the underlying InAs nanowire, instead of crystallizing in the energetically preferred zincblende structure. The chemical order is characterized by an anticorrelation ordering vector in the ⟨1120⟩ direction and arises from strong Sb–Sb repulsive interactions along the atomic chains in the ⟨1120⟩ direction.