The ratchet effect in an ageing glass

We study the dynamics of an asymmetric intruder in a glass-former model. At equilibrium, the intruder diffuses with average zero velocity. After an abrupt quench to T deeply under the mode-coupling temperature, a net average drift is observed, steady on a logarithmic time scale. The phenomenon is we...

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Detalles Bibliográficos
Autores principales: Gradenigo, Giacomo, Sarracino, Alessandro, Villamaina, Dario, Grigera, Tomás Sebastián, Puglisi, Andrea
Formato: Articulo
Lenguaje:Español
Publicado: 2010
Materias:
Física
Ciencias Exactas
structural glasses (theory)
transport properties (theory)
slow relaxation dynamics
glassy dynamics
diffusion
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126430
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-126430
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Física
Ciencias Exactas
structural glasses (theory)
transport properties (theory)
slow relaxation dynamics
glassy dynamics
diffusion
spellingShingle Física
Ciencias Exactas
structural glasses (theory)
transport properties (theory)
slow relaxation dynamics
glassy dynamics
diffusion
Gradenigo, Giacomo
Sarracino, Alessandro
Villamaina, Dario
Grigera, Tomás Sebastián
Puglisi, Andrea
The ratchet effect in an ageing glass
topic_facet Física
Ciencias Exactas
structural glasses (theory)
transport properties (theory)
slow relaxation dynamics
glassy dynamics
diffusion
description We study the dynamics of an asymmetric intruder in a glass-former model. At equilibrium, the intruder diffuses with average zero velocity. After an abrupt quench to T deeply under the mode-coupling temperature, a net average drift is observed, steady on a logarithmic time scale. The phenomenon is well reproduced in an asymmetric version of the Sinai model. The sub-velocity of the intruder grows with T<sub>eff</sub> /T, where T<sub>eff</sub> is defined by the response-correlation ratio, corresponding to a general behavior of thermal ratchets when in contact with two thermal reservoirs.
format Articulo
Articulo
author Gradenigo, Giacomo
Sarracino, Alessandro
Villamaina, Dario
Grigera, Tomás Sebastián
Puglisi, Andrea
author_facet Gradenigo, Giacomo
Sarracino, Alessandro
Villamaina, Dario
Grigera, Tomás Sebastián
Puglisi, Andrea
author_sort Gradenigo, Giacomo
title The ratchet effect in an ageing glass
title_short The ratchet effect in an ageing glass
title_full The ratchet effect in an ageing glass
title_fullStr The ratchet effect in an ageing glass
title_full_unstemmed The ratchet effect in an ageing glass
title_sort ratchet effect in an ageing glass
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/126430
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