Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals

Autores
Haberkorn, Nestor Fabian; Xu, M.; Meier, W.R.; Schmidt, Juan; Bud'Ko, S.L.; Canfield, P.C.
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the correlation between chemical composition and vortex dynamics in Ni-doped CaK(Fe1-xNix)4As4 (x=0, 0.015, 0.025, 0.03, and 0.05) single crystals by performing measurements of the critical current densities Jc and the flux creep rates S. The magnetic relaxation of all the crystals is well described by the collective creep theory. The samples display a glassy exponent μ within the predictions for vortex bundles in a weak pinning scenario and relatively small characteristic pinning energy (U0<100K). The undoped crystals display modest Jc values at low temperatures and high magnetic fields applied along the c axis. Jc(T) dependences at high fields display an unusual peak. The enhancement in Jc(T) matches with an increase in U0 and the appearance of a second peak in the magnetization. As Ni doping increases, whereas there is a monotonic decrease in Tc there is a nonmonotonic change in Jc. Initially Jc increases, reaching a maximum value for x=0.015, and then Jc decreases for x≥0.025. This change in Jc(x) is coincident with the onset of antiferromagnetic order. The magnetic field dependence of Jc(H) also manifests a change in behavior between these x values. The analysis of the vortex dynamics for small and intermediate magnetic fields shows a gradual evolution in the glassy exponent μ with Ni content, x. This implies that there is no appreciable change in the mechanism that determines the vortex relaxation.
Fil: Haberkorn, Nestor Fabian. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche | Comisión Nacional de Energía Atómica. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche; Argentina
Fil: Xu, M.. University Of Iowa. Ames Laboratory; Estados Unidos
Fil: Meier, W.R.. University Of Iowa. Ames Laboratory; Estados Unidos
Fil: Schmidt, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Bud'Ko, S.L.. University Of Iowa. Ames Laboratory; Estados Unidos
Fil: Canfield, P.C.. University Of Iowa. Ames Laboratory; Estados Unidos
Materia
iron based superconductors
vortex dynamics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/124007
Acceder
id CONICETDig_ea41746cbeff9279b64695b875003b9b
oai_identifier_str oai:ri.conicet.gov.ar:11336/124007
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystalsHaberkorn, Nestor FabianXu, M.Meier, W.R.Schmidt, JuanBud'Ko, S.L.Canfield, P.C.iron based superconductorsvortex dynamicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the correlation between chemical composition and vortex dynamics in Ni-doped CaK(Fe1-xNix)4As4 (x=0, 0.015, 0.025, 0.03, and 0.05) single crystals by performing measurements of the critical current densities Jc and the flux creep rates S. The magnetic relaxation of all the crystals is well described by the collective creep theory. The samples display a glassy exponent μ within the predictions for vortex bundles in a weak pinning scenario and relatively small characteristic pinning energy (U0<100K). The undoped crystals display modest Jc values at low temperatures and high magnetic fields applied along the c axis. Jc(T) dependences at high fields display an unusual peak. The enhancement in Jc(T) matches with an increase in U0 and the appearance of a second peak in the magnetization. As Ni doping increases, whereas there is a monotonic decrease in Tc there is a nonmonotonic change in Jc. Initially Jc increases, reaching a maximum value for x=0.015, and then Jc decreases for x≥0.025. This change in Jc(x) is coincident with the onset of antiferromagnetic order. The magnetic field dependence of Jc(H) also manifests a change in behavior between these x values. The analysis of the vortex dynamics for small and intermediate magnetic fields shows a gradual evolution in the glassy exponent μ with Ni content, x. This implies that there is no appreciable change in the mechanism that determines the vortex relaxation.Fil: Haberkorn, Nestor Fabian. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche | Comisión Nacional de Energía Atómica. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche; ArgentinaFil: Xu, M.. University Of Iowa. Ames Laboratory; Estados UnidosFil: Meier, W.R.. University Of Iowa. Ames Laboratory; Estados UnidosFil: Schmidt, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Bud'Ko, S.L.. University Of Iowa. Ames Laboratory; Estados UnidosFil: Canfield, P.C.. University Of Iowa. Ames Laboratory; Estados UnidosAmerican Physical Society2019-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/124007Haberkorn, Nestor Fabian; Xu, M.; Meier, W.R.; Schmidt, Juan; Bud'Ko, S.L.; et al.; Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals; American Physical Society; Physical Review B; 100; 6; 8-2019; 1-302469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.100.064524info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:13:07Zoai:ri.conicet.gov.ar:11336/124007instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:13:07.843CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
title Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
spellingShingle Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
Haberkorn, Nestor Fabian
iron based superconductors
vortex dynamics
title_short Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
title_full Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
title_fullStr Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
title_full_unstemmed Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
title_sort Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
dc.creator.none.fl_str_mv Haberkorn, Nestor Fabian
Xu, M.
Meier, W.R.
Schmidt, Juan
Bud'Ko, S.L.
Canfield, P.C.
author Haberkorn, Nestor Fabian
author_facet Haberkorn, Nestor Fabian
Xu, M.
Meier, W.R.
Schmidt, Juan
Bud'Ko, S.L.
Canfield, P.C.
author_role author
author2 Xu, M.
Meier, W.R.
Schmidt, Juan
Bud'Ko, S.L.
Canfield, P.C.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv iron based superconductors
vortex dynamics
topic iron based superconductors
vortex dynamics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study the correlation between chemical composition and vortex dynamics in Ni-doped CaK(Fe1-xNix)4As4 (x=0, 0.015, 0.025, 0.03, and 0.05) single crystals by performing measurements of the critical current densities Jc and the flux creep rates S. The magnetic relaxation of all the crystals is well described by the collective creep theory. The samples display a glassy exponent μ within the predictions for vortex bundles in a weak pinning scenario and relatively small characteristic pinning energy (U0<100K). The undoped crystals display modest Jc values at low temperatures and high magnetic fields applied along the c axis. Jc(T) dependences at high fields display an unusual peak. The enhancement in Jc(T) matches with an increase in U0 and the appearance of a second peak in the magnetization. As Ni doping increases, whereas there is a monotonic decrease in Tc there is a nonmonotonic change in Jc. Initially Jc increases, reaching a maximum value for x=0.015, and then Jc decreases for x≥0.025. This change in Jc(x) is coincident with the onset of antiferromagnetic order. The magnetic field dependence of Jc(H) also manifests a change in behavior between these x values. The analysis of the vortex dynamics for small and intermediate magnetic fields shows a gradual evolution in the glassy exponent μ with Ni content, x. This implies that there is no appreciable change in the mechanism that determines the vortex relaxation.
Fil: Haberkorn, Nestor Fabian. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche | Comisión Nacional de Energía Atómica. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche; Argentina
Fil: Xu, M.. University Of Iowa. Ames Laboratory; Estados Unidos
Fil: Meier, W.R.. University Of Iowa. Ames Laboratory; Estados Unidos
Fil: Schmidt, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Bud'Ko, S.L.. University Of Iowa. Ames Laboratory; Estados Unidos
Fil: Canfield, P.C.. University Of Iowa. Ames Laboratory; Estados Unidos
description We study the correlation between chemical composition and vortex dynamics in Ni-doped CaK(Fe1-xNix)4As4 (x=0, 0.015, 0.025, 0.03, and 0.05) single crystals by performing measurements of the critical current densities Jc and the flux creep rates S. The magnetic relaxation of all the crystals is well described by the collective creep theory. The samples display a glassy exponent μ within the predictions for vortex bundles in a weak pinning scenario and relatively small characteristic pinning energy (U0<100K). The undoped crystals display modest Jc values at low temperatures and high magnetic fields applied along the c axis. Jc(T) dependences at high fields display an unusual peak. The enhancement in Jc(T) matches with an increase in U0 and the appearance of a second peak in the magnetization. As Ni doping increases, whereas there is a monotonic decrease in Tc there is a nonmonotonic change in Jc. Initially Jc increases, reaching a maximum value for x=0.015, and then Jc decreases for x≥0.025. This change in Jc(x) is coincident with the onset of antiferromagnetic order. The magnetic field dependence of Jc(H) also manifests a change in behavior between these x values. The analysis of the vortex dynamics for small and intermediate magnetic fields shows a gradual evolution in the glassy exponent μ with Ni content, x. This implies that there is no appreciable change in the mechanism that determines the vortex relaxation.
publishDate 2019
dc.date.none.fl_str_mv 2019-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/124007
Haberkorn, Nestor Fabian; Xu, M.; Meier, W.R.; Schmidt, Juan; Bud'Ko, S.L.; et al.; Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals; American Physical Society; Physical Review B; 100; 6; 8-2019; 1-30
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/124007
identifier_str_mv Haberkorn, Nestor Fabian; Xu, M.; Meier, W.R.; Schmidt, Juan; Bud'Ko, S.L.; et al.; Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals; American Physical Society; Physical Review B; 100; 6; 8-2019; 1-30
2469-9969
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.100.064524
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614044655288320
score 13.070432

Publicaciones similares