Potential energy landscape signatures of slow dynamics in glass forming liquids

Srikanth Sastry, Pablo G. Debenedetti, Frank H. Stillinger, Thomas B. Schrøder, Jeppe C. Dyre, Sharon C. Glotzer

Research output: Contribution to journalConference article

37 Scopus citations

Abstract

We study the properties of local potential energy minima (`inherent structures') sampled by liquids at low temperatures as an approach to elucidating the mechanisms of the observed dynamical slowing down observed as the glass transition temperature is approached. This onset of slow dynamics is accompanied by the sampling of progressively deeper potential energy minima. Further, evidence is found in support of a qualitative change in the inherent structures sampled in a temperature range that includes the mode coupling critical temperature Tc, such that a separation of vibrational relaxation within inherent structure basins from that due to inter-basin transitions becomes valid at temperatures T<Tc. Average inherent structure energies do not show any qualitatively significant system size dependence.

Original languageEnglish (US)
Pages (from-to)301-308
Number of pages8
JournalPhysica A: Statistical Mechanics and its Applications
Volume270
Issue number1
DOIs
StatePublished - Aug 1 1999
EventProceedings of the 1999 International Conference on Statistical Physics, Statphys-Calcutta III - Calcutta, India
Duration: Jan 4 1999Jan 9 1999

All Science Journal Classification (ASJC) codes

  • Statistics and Probability
  • Condensed Matter Physics

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