Femtosecond structural transformation of phase-change materials far from equilibrium monitored by coherent phonons

Muneaki Hase, Paul Fons, Kirill Mitrofanov +2

Multi-component chalcogenides, such as quasi-binary GeTe-Sb${}_2$Te${}_3$ alloys, are widely used in optical data storage media in the form of rewritable optical discs. Ge${}_2$Sb$…