Proximity effects and vortex dynamics in superconducting heterostructures

Vortex lattice dynamics has been studied in thin Nb superconducting films sputtered on top of a dense triangular array of V dots with and without an intermediate SiO2 insulating layer. While The insulating layer modifies only slightly The Nb film corrugation, it reduces superconducting commensurabil...

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Detalles Bibliográficos
Autor principal: Bekeris, Victoria Isabel
Publicado: 2014
Materias:
Crystal lattices
Insulating materials
Insulation
Low temperature effects
Temperature
Temperature distribution
Vortex flow
Critical temperatures
Insulating layers
Matching fields
Parabolic temperature
Proximity effects
Triangular arrays
Vortex dynamics
Vortex lattice dynamics
Superconducting films
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v568_n_p_Carreira
http://hdl.handle.net/20.500.12110/paper_17426588_v568_n_p_Carreira
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_17426588_v568_n_p_Carreira
record_format dspace
spelling paper:paper_17426588_v568_n_p_Carreira2023-06-08T16:27:32Z Proximity effects and vortex dynamics in superconducting heterostructures Bekeris, Victoria Isabel Crystal lattices Insulating materials Insulation Low temperature effects Temperature Temperature distribution Vortex flow Critical temperatures Insulating layers Matching fields Parabolic temperature Proximity effects Triangular arrays Vortex dynamics Vortex lattice dynamics Superconducting films Vortex lattice dynamics has been studied in thin Nb superconducting films sputtered on top of a dense triangular array of V dots with and without an intermediate SiO2 insulating layer. While The insulating layer modifies only slightly The Nb film corrugation, it reduces superconducting commensurability effects (CE) substantially. This implies that superconducting commensurability is dominated by proximity effects. Moreover, The HC2 (T) phase diagram of The sample without an insulating layer shows a parabolic temperature dependence near TC and critical temperature oscillations with The periodicity of The matching field. Therefore, strong proximity effects locally suppress superconductivity leading to a superconducting mesh. When The proximity effect is decreased by an insulating layer, HC2(T) follows The expected linear T dependence. © Published under licence by IOP Publishing Ltd. Fil:Bekeris, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v568_n_p_Carreira http://hdl.handle.net/20.500.12110/paper_17426588_v568_n_p_Carreira
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Crystal lattices
Insulating materials
Insulation
Low temperature effects
Temperature
Temperature distribution
Vortex flow
Critical temperatures
Insulating layers
Matching fields
Parabolic temperature
Proximity effects
Triangular arrays
Vortex dynamics
Vortex lattice dynamics
Superconducting films
spellingShingle Crystal lattices
Insulating materials
Insulation
Low temperature effects
Temperature
Temperature distribution
Vortex flow
Critical temperatures
Insulating layers
Matching fields
Parabolic temperature
Proximity effects
Triangular arrays
Vortex dynamics
Vortex lattice dynamics
Superconducting films
Bekeris, Victoria Isabel
Proximity effects and vortex dynamics in superconducting heterostructures
topic_facet Crystal lattices
Insulating materials
Insulation
Low temperature effects
Temperature
Temperature distribution
Vortex flow
Critical temperatures
Insulating layers
Matching fields
Parabolic temperature
Proximity effects
Triangular arrays
Vortex dynamics
Vortex lattice dynamics
Superconducting films
description Vortex lattice dynamics has been studied in thin Nb superconducting films sputtered on top of a dense triangular array of V dots with and without an intermediate SiO2 insulating layer. While The insulating layer modifies only slightly The Nb film corrugation, it reduces superconducting commensurability effects (CE) substantially. This implies that superconducting commensurability is dominated by proximity effects. Moreover, The HC2 (T) phase diagram of The sample without an insulating layer shows a parabolic temperature dependence near TC and critical temperature oscillations with The periodicity of The matching field. Therefore, strong proximity effects locally suppress superconductivity leading to a superconducting mesh. When The proximity effect is decreased by an insulating layer, HC2(T) follows The expected linear T dependence. © Published under licence by IOP Publishing Ltd.
author Bekeris, Victoria Isabel
author_facet Bekeris, Victoria Isabel
author_sort Bekeris, Victoria Isabel
title Proximity effects and vortex dynamics in superconducting heterostructures
title_short Proximity effects and vortex dynamics in superconducting heterostructures
title_full Proximity effects and vortex dynamics in superconducting heterostructures
title_fullStr Proximity effects and vortex dynamics in superconducting heterostructures
title_full_unstemmed Proximity effects and vortex dynamics in superconducting heterostructures
title_sort proximity effects and vortex dynamics in superconducting heterostructures
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v568_n_p_Carreira
http://hdl.handle.net/20.500.12110/paper_17426588_v568_n_p_Carreira
work_keys_str_mv AT bekerisvictoriaisabel proximityeffectsandvortexdynamicsinsuperconductingheterostructures
_version_ 1768543153498882048

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