title: Ultra-slow dynamics in low density amorphous ice revealed by deuteron NMR: indication of a glass transition.
abstract: The postulated glass-liquid transition of low density amorphous ice (LDA) is investigated with deuteron NMR stimulated echo experiments. Such experiments give access to ultra-slow reorientations of water molecules on time scales expected for structural relaxation of glass formers close to the glass-liquid transition temperature. An involved data analysis is necessary to account for signal contributions originating from a gradual crystallization to cubic ice. Even if some ambiguities remain, our findings support the view that pressure amorphized LDA ices are of glassy nature and undergo a glass-liquid transition before crystallization.
authors: Institut für Festkörperphysik, Technische Universität Darmstadt, Darmstadt, Germany. florian.loew@physik.tu-darmstadt.de
authors: Florian
authors: F
authors: Löw
authors: Katrin
authors: K
authors: Amann-Winkel
authors: Thomas
authors: T
authors: Loerting
authors: Franz
authors: F
authors: Fujara
authors: Burkhard
authors: B
authors: Geil