Anharmonicity and quasi-localization of the excess low-frequency vibrations in jammed solids
Anharmonicity and quasi-localization of the excess low-frequency vibrations in jammed solids
We compare the harmonic and anharmonic properties of the vibrational modes in 3-dimensional jammed packings of frictionless spheres interacting via repulsive, finite range potentials. A crossover frequency is apparent in the density of states, the diffusivity and the participation ratio of the modes. At this frequency, which shifts to zero …