Fast bond-transposition algorithms for generating covalent amorphous structures

Continuous random network (CRN) models are often used as models for elemental and binary tetrahedral semiconductors such as a-Si and a-GaAs. Here, we review algorithms to generate CRN models. We discuss their structural properties and compare with those models obtained via different computational approaches, as well as with experiment. Additionally, we discuss current results towards the generation of para-crystalline models.