Direct Observation of Stretched-Exponential Relaxation in Low-Temperature Lennard-Jones Systems Using the Cage Correlation Function

by: Eran Rabani, Daniel J Gezelter, BJ Berne

Physical Review Letters, Vol. 82, No. 18. (3 May 1999), 3649.

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Abstract

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.

@article{citeulike:2582904, abstract = {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.}, author = {Rabani, Eran and Gezelter, Daniel J. and Berne, B. J. }, citeulike-article-id = {2582904}, doi = {10.1103/PhysRevLett.82.3649}, journal = {Physical Review Letters}, keywords = {function, relaxation, review}, month = {May}, number = {18}, pages = {3649+}, posted-at = {2008-03-24 22:18:16}, priority = {2}, publisher = {American Physical Society}, title = {Direct Observation of Stretched-Exponential Relaxation in Low-Temperature Lennard-Jones Systems Using the Cage Correlation Function}, url = {http://dx.doi.org/10.1103/PhysRevLett.82.3649}, volume = {82}, year = {1999} }

RIS record

TY - JOUR ID - citeulike:2582904 TI - Direct Observation of Stretched-Exponential Relaxation in Low-Temperature Lennard-Jones Systems Using the Cage Correlation Function JF - Physical Review Letters VL - 82 IS - 18 SP - 3649 PB - American Physical Society 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. KW - function KW - relaxation KW - review AU - Rabani, Eran AU - Gezelter, Daniel AU - Berne, BJ PY - 1999/05/03/ UR - http://dx.doi.org/10.1103/PhysRevLett.82.3649 ER -

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