Holographic disorder driven superconductor-metal transition

We implement the effects of disorder on a holographic superconductor by introducing a random chemical potential on the boundary. We demonstrate explicitly that increasing disorder leads to the formation of islands where the superconducting order is enhanced and subsequently to the transition to a me...

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Autores principales: Areán, Daniel, Pando Zayas, L. A., Salazar Landea, Ignacio, Scardicchio, A.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Naturales
Holography
Disorder
Superconductors
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/102626
https://ri.conicet.gov.ar/11336/80695
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-102626
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Holography
Disorder
Superconductors
spellingShingle Ciencias Naturales
Holography
Disorder
Superconductors
Areán, Daniel
Pando Zayas, L. A.
Salazar Landea, Ignacio
Scardicchio, A.
Holographic disorder driven superconductor-metal transition
topic_facet Ciencias Naturales
Holography
Disorder
Superconductors
description We implement the effects of disorder on a holographic superconductor by introducing a random chemical potential on the boundary. We demonstrate explicitly that increasing disorder leads to the formation of islands where the superconducting order is enhanced and subsequently to the transition to a metal. We study the behavior of the superfluid density and of the conductivity as a function of the strength of disorder. We find explanations for various marked features in the conductivities in terms of hydrodynamic quasinormal modes of the holographic superconductors. These identifications plus a particular disorder-dependent spectral weight shift in the conductivity point to a signature of the Higgs mode in the context of disordered holographic superconductors. We observe that the behavior of the order parameter close to the transition is not mean-field type as in the clean case; rather we find robust agreement with exp(-A|T-Tc|-ν), with ν=1.03±0.02 for this disorder-driven smeared transition.
format Articulo
Preprint
author Areán, Daniel
Pando Zayas, L. A.
Salazar Landea, Ignacio
Scardicchio, A.
author_facet Areán, Daniel
Pando Zayas, L. A.
Salazar Landea, Ignacio
Scardicchio, A.
author_sort Areán, Daniel
title Holographic disorder driven superconductor-metal transition
title_short Holographic disorder driven superconductor-metal transition
title_full Holographic disorder driven superconductor-metal transition
title_fullStr Holographic disorder driven superconductor-metal transition
title_full_unstemmed Holographic disorder driven superconductor-metal transition
title_sort holographic disorder driven superconductor-metal transition
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/102626
https://ri.conicet.gov.ar/11336/80695
work_keys_str_mv AT areandaniel holographicdisorderdrivensuperconductormetaltransition
AT pandozayasla holographicdisorderdrivensuperconductormetaltransition
AT salazarlandeaignacio holographicdisorderdrivensuperconductormetaltransition
AT scardicchioa holographicdisorderdrivensuperconductormetaltransition
bdutipo_str Repositorios
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