γ-GeSe: A New Hexagonal Polymorph from Group IV–VI Monochalcogenides
γ-GeSe: A New Hexagonal Polymorph from Group IV–VI Monochalcogenides
The family of group IV-VI monochalcogenides has an atomically puckered layered structure, and their atomic bond configuration suggests the possibility for the realization of various polymorphs. Here, we report the synthesis of the first hexagonal polymorph from the family of group IV-VI monochalcogenides, which is conventionally orthorhombic. Recently predicted four-atomic-thick …