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  What does the potential energy landscape tell us about the dynamics of supercooled liquids and glasses?

Doliwa, B., & Heuer, A. (2003). What does the potential energy landscape tell us about the dynamics of supercooled liquids and glasses? Physical Review Letters, 91(23): 235501.

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 Creators:
Doliwa, B.1, Author           
Heuer, Andreas1, Author           
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1MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Abstract: For a model glass former we demonstrate via computer simulations how macroscopic dynamic quantities can be inferred from a potential energy landscape (PEL) analysis. The essential step is to consider whole superstructures of many PEL minima, called metabasins, rather than single minima. We show that two types of metabasins exist: some allowing for quasifree motion on the PEL (liquidlike), and the others acting as traps (solidlike). The activated, multistep escapes from the latter metabasins are found to dictate the slowing down of dynamics upon cooling over a much broader temperature range than is currently assumed. ©2003 The American Physical Society

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Language(s): eng - English
 Dates: 2003
 Publication Status: Issued
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 Identifiers: eDoc: 60101
Other: P-03-187
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Title: Physical Review Letters
  Alternative Title : Phys. Rev. Lett.
Source Genre: Journal
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Pages: - Volume / Issue: 91 (23) Sequence Number: 235501 Start / End Page: - Identifier: -