Description
The data files in this collection are associated with the paper "Growing timescales and lengthscales characterizing vibrations of amorphous solids" Y. Jin L. Berthier P. Charbonneau G. Parisi B. Seoane and F. Zamponi PNAS 2016. They include .dat .eps and .gle files with associated raw data and generating scripts to allow for replication of the figures.
Low-temperature properties of crystalline solids can be understood using harmonic perturbations around a perfect lattice as in Debye's theory. Low-temperature properties of amorphous solids however strongly depart from such descriptions displaying enhanced transport activated slow dynamics across energy barriers excess vibrational modes with respect to Debye's theory (i.e. a Boson Peak) and complex irreversible responses to small mechanical deformations. These experimental observations indirectly suggest that the dynamics of amorphous solids becomes anomalous at low temperatures. Here we present direct numerical evidence that vibrations change nature at a well-defined location deep inside the glass phase of a simple glass former. We provide a real-space description of this transition and of the rapidly growing time and length scales that accompany it. Our results provide the seed for a universal understanding of low-temperature glass anomalies within the theoretical framework of the recently discovered Gardner phase transition.
Low-temperature properties of crystalline solids can be understood using harmonic perturbations around a perfect lattice as in Debye's theory. Low-temperature properties of amorphous solids however strongly depart from such descriptions displaying enhanced transport activated slow dynamics across energy barriers excess vibrational modes with respect to Debye's theory (i.e. a Boson Peak) and complex irreversible responses to small mechanical deformations. These experimental observations indirectly suggest that the dynamics of amorphous solids becomes anomalous at low temperatures. Here we present direct numerical evidence that vibrations change nature at a well-defined location deep inside the glass phase of a simple glass former. We provide a real-space description of this transition and of the rapidly growing time and length scales that accompany it. Our results provide the seed for a universal understanding of low-temperature glass anomalies within the theoretical framework of the recently discovered Gardner phase transition.