Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder

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The effect of disorder on confined metallic cavities with an Aharonov-Bohm flux line is addressed. We find that, even deep in the diffusive regime, large values of persistent currents may arise for a wide variety of geometries. We present numerical results supporting an anomalous scaling law of the...

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Autores principales: Chiappe, G., Sánchez, M.J.
Formato: JOUR
Materias:
metal
article
calculation
diffusion
electric conductivity
geometry
molecular dynamics
physics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01631829_v65_n15_p1534091_Chiappe
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01631829_v65_n15_p1534091_Chiappe
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spelling todo:paper_01631829_v65_n15_p1534091_Chiappe2023-10-03T15:01:52Z Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder Chiappe, G. Sánchez, M.J. metal article calculation diffusion electric conductivity geometry molecular dynamics physics The effect of disorder on confined metallic cavities with an Aharonov-Bohm flux line is addressed. We find that, even deep in the diffusive regime, large values of persistent currents may arise for a wide variety of geometries. We present numerical results supporting an anomalous scaling law of the average typical current 〈I typ〉 with the strength of disorder w, 〈I typ〉∼w -γ with γ<2. This is contrasted with previously reported results obtained for cylindrical samples where a scaling 〈I typ〉∼ -2 has been found. Possible links to, up to date, unexplained experimental data are finally discussed. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01631829_v65_n15_p1534091_Chiappe
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic metal
article
calculation
diffusion
electric conductivity
geometry
molecular dynamics
physics
spellingShingle metal
article
calculation
diffusion
electric conductivity
geometry
molecular dynamics
physics
Chiappe, G.
Sánchez, M.J.
Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder
topic_facet metal
article
calculation
diffusion
electric conductivity
geometry
molecular dynamics
physics
description The effect of disorder on confined metallic cavities with an Aharonov-Bohm flux line is addressed. We find that, even deep in the diffusive regime, large values of persistent currents may arise for a wide variety of geometries. We present numerical results supporting an anomalous scaling law of the average typical current 〈I typ〉 with the strength of disorder w, 〈I typ〉∼w -γ with γ<2. This is contrasted with previously reported results obtained for cylindrical samples where a scaling 〈I typ〉∼ -2 has been found. Possible links to, up to date, unexplained experimental data are finally discussed.
format JOUR
author Chiappe, G.
Sánchez, M.J.
author_facet Chiappe, G.
Sánchez, M.J.
author_sort Chiappe, G.
title Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder
title_short Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder
title_full Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder
title_fullStr Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder
title_full_unstemmed Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder
title_sort persistent currents in diffusive metallic cavities: large values and anomalous scaling with disorder
url http://hdl.handle.net/20.500.12110/paper_01631829_v65_n15_p1534091_Chiappe
work_keys_str_mv AT chiappeg persistentcurrentsindiffusivemetalliccavitieslargevaluesandanomalousscalingwithdisorder
AT sanchezmj persistentcurrentsindiffusivemetalliccavitieslargevaluesandanomalousscalingwithdisorder
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