Modelling of photo-induced changes in chalcogenide glasses: a-Se and a-AsSe

Ovonic Threshold Switching in Se‐Rich GexSe1−x Glasses from an Atomistic Point of View: The Crucial Role of the Metavalent Bonding Mechanism

“…The number of such states was defined by including those conduction states whose energy is less than 1 eV above the top of the valence states. This scheme has the advantage of maintaining a fixed number of excited electrons during the dynamics whereas conventional free energy density functional simulation would be more adapted to simulate the effect of optical excitation, as done for instance in amorphous Se [18] . A review of the various models for optical excitations effects in glasses can be found in Ref.…”