TY - JOUR
T1 - Direct observation of stretched-exponential relaxation in low-temperature lennard-jones systems using the cage correlation function
AU - Rabani, Eran
AU - Gezelter, J. Daniel
AU - Berne, B. J.
PY - 1999
Y1 - 1999
N2 - We report on the direct observation of stretched exponential relaxation in low-temperature monatomic Lennard-Jones systems which were cooled slowly from the liquid phase to form crystals with a large number of defects. We use the cage correlation function [E. Rabani, J. D. Gezelter, and B. J. Berne, J. Chem. Phys. 107, 6867 (1997)] which measures changes in atomic surroundings to observe the stretched exponential relaxations. We obtain a distribution of hopping rates assuming that the origin of the Kohlrausch-Williams-Watts law is from static disorder in the distribution of barrier heights.
AB - We report on the direct observation of stretched exponential relaxation in low-temperature monatomic Lennard-Jones systems which were cooled slowly from the liquid phase to form crystals with a large number of defects. We use the cage correlation function [E. Rabani, J. D. Gezelter, and B. J. Berne, J. Chem. Phys. 107, 6867 (1997)] which measures changes in atomic surroundings to observe the stretched exponential relaxations. We obtain a distribution of hopping rates assuming that the origin of the Kohlrausch-Williams-Watts law is from static disorder in the distribution of barrier heights.
UR - http://www.scopus.com/inward/record.url?scp=0000705353&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.82.3649
DO - 10.1103/PhysRevLett.82.3649
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AN - SCOPUS:0000705353
SN - 0031-9007
VL - 82
SP - 3649
EP - 3652
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
ER -