Evidence for a spinodal limit of amorphous excitations in glassy systems

What is the origin of the sharp slowdown displayed by glassy systems? Physical common sense suggests there must be a concomitant growing correlation length, but finding this length has been nontrivial. In random first-order theory, it is given by the size of amorphous excitations, which depends on a...

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Detalles Bibliográficos
Autores principales:	Cammarota, Chiara, Cavagna, Andrea, Gradenigo, Giacomo, Grigera, Tomás Sebastián, Verrocchio, Paolo
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2009
Materias:	Ciencias Exactas Física disordered systems (theory) energy landscapes (theory) structural glasses (theory)
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/131040
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-131040
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Física disordered systems (theory) energy landscapes (theory) structural glasses (theory)
spellingShingle	Ciencias Exactas Física disordered systems (theory) energy landscapes (theory) structural glasses (theory) Cammarota, Chiara Cavagna, Andrea Gradenigo, Giacomo Grigera, Tomás Sebastián Verrocchio, Paolo Evidence for a spinodal limit of amorphous excitations in glassy systems
topic_facet	Ciencias Exactas Física disordered systems (theory) energy landscapes (theory) structural glasses (theory)
description	What is the origin of the sharp slowdown displayed by glassy systems? Physical common sense suggests there must be a concomitant growing correlation length, but finding this length has been nontrivial. In random first-order theory, it is given by the size of amorphous excitations, which depends on a balance between their mutual interfacial energy and their configurational entropy. But how these excitations disappear when crossing over to the normal high temperature phase is unclear, chiefly due to lack of data about the surface tension. We measure the energy cost for creating amorphous excitations in a model glass-former, and discover that the surface tension vanishes at a well-defined spinodal energy, above which amorphous excitations cannot be sustained. This spinodal therefore marks the true onset of glassiness.
format	Articulo Articulo
author	Cammarota, Chiara Cavagna, Andrea Gradenigo, Giacomo Grigera, Tomás Sebastián Verrocchio, Paolo
author_facet	Cammarota, Chiara Cavagna, Andrea Gradenigo, Giacomo Grigera, Tomás Sebastián Verrocchio, Paolo
author_sort	Cammarota, Chiara
title	Evidence for a spinodal limit of amorphous excitations in glassy systems
title_short	Evidence for a spinodal limit of amorphous excitations in glassy systems
title_full	Evidence for a spinodal limit of amorphous excitations in glassy systems
title_fullStr	Evidence for a spinodal limit of amorphous excitations in glassy systems
title_full_unstemmed	Evidence for a spinodal limit of amorphous excitations in glassy systems
title_sort	evidence for a spinodal limit of amorphous excitations in glassy systems
publishDate	2009
url	http://sedici.unlp.edu.ar/handle/10915/131040
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Evidence for a spinodal limit of amorphous excitations in glassy systems

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