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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. American Physical Society. 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.

Item URL in elib:https://elib.dlr.de/66132/
Document Type:Article
Title:Disconnected Glass-Glass Transitions and Diffusion Anomalies in a Model with Two Repulsive Length Scales
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sperl, Matthiasmatthias.sperl (at) dlr.deUNSPECIFIED
Zaccarelli, E.UNSPECIFIEDUNSPECIFIED
Sciortino, F.UNSPECIFIEDUNSPECIFIED
Stanley, H.E.UNSPECIFIEDUNSPECIFIED
Date:5 April 2010
Journal or Publication Title:Physical Review Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1103/PhysRevLett.104.145701
Publisher:American Physical Society
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: Sperl, Matthias
Deposited On:08 Nov 2010 08:19
Last Modified:30 May 2019 22:05

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