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arXiv:1607.07393 (cond-mat)
[Submitted on 25 Jul 2016 (v1), last revised 27 Jul 2016 (this version, v2)]

Title:Johari-Goldstein Relaxation Events Are Metabasin Transitions

Authors:Marcus T Cicerone, Madhusudan Tyagi
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Abstract:We show that by representing quasi-elastic and inelastic neutron scattering from propylene carbonate (PC) with an explicitly heterogeneous model, we recover two distinct dynamic signatures in addition to diffusive motion. The intermediate scattering function provides access to the time-dependence of these two dynamic processes, and they appear to correspond to transitions between inherent states and between metabasins on a potential energy landscape. By fitting the full q-dependence of inelastic scattering, we confirm that that the Johari-Goldstein ($\beta_{JG}$) relaxation in PC is indistinguishable from metabasin transitions.
Subjects: Soft Condensed Matter (cond-mat.soft)
Cite as: arXiv:1607.07393 [cond-mat.soft]
  (or arXiv:1607.07393v2 [cond-mat.soft] for this version)
  https://doi.org/10.48550/arXiv.1607.07393

Submission history

From: Marcus Cicerone [view email]
[v1] Mon, 25 Jul 2016 18:13:46 UTC (529 KB)
[v2] Wed, 27 Jul 2016 10:12:56 UTC (529 KB)
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