Microscopic origin of the logarithmic relaxation in molecular glass-forming liquids

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Dehong Yu
  • Fanni Juranyi
  • Suresh M. Chathoth

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number094203
Journal / Publication Physical Review B: covering condensed matter and materials physics
Volume98
Issue number9
Online published27 Sep 2018
Publication statusPublished - Sep 2018

Abstract

Logarithmic relaxation is a unique relaxation process exhibited by a few molecular liquids and biomolecules. However, the microscopic origin of logarithmic relaxation is still unclear. To understand the origin of this process, we studied two liquids that exhibit logarithmic relaxation in a dissolved state using quasielastic neutron scattering (QENS) and depolarized dynamic light scattering (DDLS). Although the intermolecular potential of the liquids is drastically different in the dissolved state from the bulk liquids, we observed that the logarithmic relaxation still persists. Our results indicate that the intermolecular potential does not play a role in determining the logarithmic relaxation process. The coupling of rotational and translational relaxation processes could be the origin of the logarithmic relaxation process exhibited by the molecular liquids.

Citation Format(s)

Microscopic origin of the logarithmic relaxation in molecular glass-forming liquids. / Chen, Changjiu; Krishnan, Rithin P.; Wong, Kaikin; Yu, Dehong; Juranyi, Fanni; Chathoth, Suresh M.

In: Physical Review B: covering condensed matter and materials physics, Vol. 98, No. 9, 094203, 09.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal