2009
DOI: 10.1063/1.3131690
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Abstract: Connectivity in the potential energy landscape of a binary Lennard-Jones system can be characterized at the level of cage-breaking. We calculate the number of cage-breaking routes from a given local minimum and determine the branching probabilities at different temperatures, along with correlation factors that represent the repeated reversals of cage-breaking events. The number of reversals increases at lower temperatures and for more fragile systems, while the number of accessible connections decreases. We th… Show more

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Cited by 49 publications
(68 citation statements)
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“…This possibility is consistent with the observation of Wales and associates that the connectivity of the metabasins decreases on cooling, to which they attribute the super-Arrhenius behavior of fragile liquids. 8,11 Any molecular interpretation of the JG relaxation must surely take into account the recent discovery of dynamic heterogeneity in supercooled liquids, described in a review by Ediger 25 and in some recent theoretical papers, [26][27][28][29] none of which however mentions this relaxation. This is understandable given the general impression that the JG is an intrabasin transition and thus not obviously relevant to the dynamic heterogeneity, which is concerned with the alpha relaxation and with the related diffusion coefficient.…”
Section: ͒mentioning
confidence: 99%
See 1 more Smart Citation
“…This possibility is consistent with the observation of Wales and associates that the connectivity of the metabasins decreases on cooling, to which they attribute the super-Arrhenius behavior of fragile liquids. 8,11 Any molecular interpretation of the JG relaxation must surely take into account the recent discovery of dynamic heterogeneity in supercooled liquids, described in a review by Ediger 25 and in some recent theoretical papers, [26][27][28][29] none of which however mentions this relaxation. This is understandable given the general impression that the JG is an intrabasin transition and thus not obviously relevant to the dynamic heterogeneity, which is concerned with the alpha relaxation and with the related diffusion coefficient.…”
Section: ͒mentioning
confidence: 99%
“…At that time, we suggested as an explanation of this universality that the basins in the energy landscapes of supercooled liquids had "corrugated bottoms," energy hills, and valleys that are small compared to the hills and valleys that constitute the major features of the landscape. 2 Subsequent calculations of energy landscapes pioneered by Stillinger and Weber [3][4][5] and extended by others [6][7][8][9][10][11][12][13][14] have amply confirmed this complex fine structure and led to the concept of the "metabasin." 4,5 The alpha relaxation was attributed to transitions over large barriers between metabasins and the JG to activated transitions over the lower barriers within a metabasin.…”
mentioning
confidence: 99%
“…[1,[39][40][41] In the context of transport in the supercooled liquid, Goldstein and Johari discussed the possible influence of energy landscape in describing slow relaxation in glassy liquids. [16] This pioneering idea was further studied using inherent structure formalism [17][18][19][20][21][22][23]. The latter provides evidence of the migration of a system from one minimum to another minimum.…”
Section: Introductionmentioning
confidence: 99%
“…Information is then gathered on the various local minima, and on the sizes of their basins of attraction. Various studies have investigated, among other issues, the detailed structure of the potential energy landscape, the substructure of minima, and the properties of energy barriers between minima [18,19,20]. Several works have also used the information on the energy landscape to study a master equation for the time evolution of the probability to be in each minimum.…”
Section: Introductionmentioning
confidence: 99%