44 citations · 95 across the 5 of their papers we have counts for
5 papers
Scaling of the Local Dynamics and the Intermolecular Potential
C. M. Roland, J. L. Feldman, R. Casalini
The experimental fact that relaxation times, tau, of supercooled liquids and polymers are uniquely defined by the quantity TV^g, where T is temperature, V specific volume, and g a…
Tight-binding study of structure and vibrations of amorphous silicon
J. L. Feldman, N. Bernstein, D. A. Papaconstantopoulos +1
We present a tight-binding calculation that, for the first time, accurately describes the structural, vibrational and elastic properties of amorphous silicon. We compute the intera…
Numerical study of anharmonic vibrational decay in amorphous and paracrystalline silicon
Jaroslav Fabian, Joseph L. Feldman, C. Stephen Hellberg +1
The anharmonic decay rates of atomic vibrations in amorphous silicon (a-Si) and paracrystalline silicon (p-Si), containing small crystalline grains embedded in a disordered matrix,…
Numerical Study of the Localization-Delocalization Transition for Vibrations in Amorphous Silicon
William Garber, Folkert M. Tangerman, Philip B. Allen +1
Numerical studies of amorphous silicon in harmonic approximation show that the highest 3.5% of vibrational normal modes are localized. As vibrational frequency increases through th…
Diffusons, Locons, Propagons: Character of Atomic Vibrations in Amorphous Si
Philip B. Allen, Joseph L. Feldman, Jaroslav Fabian +1
Numerical studies of amorphous silicon show that the lowest 4% of vibrational modes are plane-wave like ("propagons") and the highest 3% of modes are localized ("locons"). The rest…