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Disconnected Glass-Glass Transitions and Diffusion Anomalies in a Model with Two Repulsive Length Scales

Sperl, Matthias and Zaccarelli, E. and Sciortino, F. and Stanley, H.E. (2010) Disconnected Glass-Glass Transitions and Diffusion Anomalies in a Model with Two Repulsive Length Scales. Physical Review Letters. DOI: 10.1103/PhysRevLett.104.145701.

Full text not available from this repository.

Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.104.145701

Abstract

Building on mode-coupling-theory calculations, we report a novel scenario for multiple glass transitions in a purely repulsive spherical potential: the square shoulder. The liquid-glass transition lines exhibit both melting by cooling and melting by compression as well as associated diffusion anomalies, similar to the ones observed in water. Differently from all previously investigated models, we find for small shoulder widths a glass-glass line that is disconnected from the liquid phase. Upon increasing the shoulder width such a glass-glass line merges with the liquid-glass transition lines, featuring two distinct end point singularities that give rise to logarithmic decays in the dynamics. We analytically explain these findings by considering the interplay of different repulsive length scales.

Document Type:Article
Title:Disconnected Glass-Glass Transitions and Diffusion Anomalies in a Model with Two Repulsive Length Scales
Authors:
AuthorsInstitution or Email of Authors
Sperl, Matthiasmatthias.sperl@dlr.de
Zaccarelli, E.UNSPECIFIED
Sciortino, F.UNSPECIFIED
Stanley, H.E.UNSPECIFIED
Date:5 April 2010
Journal or Publication Title:Physical Review Letters
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1103/PhysRevLett.104.145701
Status:Published
Keywords:mode-coupling theory for glassy water
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W SY - Technik für Raumfahrtsysteme
DLR - Research area:Space
DLR - Program:W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):W - Projekt MAPHEUS (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Matthias Sperl
Deposited On:08 Nov 2010 08:19
Last Modified:07 Feb 2013 20:39

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