Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7

Detalhes bibliográficos
Autor(a) principal: Schaf, Jacob
Data de Publicação: 1989
Outros Autores: Pureur Neto, Paulo, Kunzler, Julio Vitor
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/103603
Resumo: We report systematic field-cooled (PC) and zero-field-cooled (ZPC) diamagnetic susceptibility measurements in polycrystalline samples of the high-Tc oxide superconductors RBa2Cu30 7, where R =Y, Eu, or Gd. We focus mainly on the temperature range near T0 where the PC and ZPC curves split up below a characteristic temperature, similar to the behavior of spin glasses. This temperature depends on the applied magnetic field and defines a crossover line in the H-Tplane separating ergodic and nonergodic behavior, in close resemblance to what is found in conventional spin glasses. We suggest that this is a general characteristic of the ceramic oxide superconductors. Moreover, our data allow us to obtain a more detailed high-temperature H-Tphase diagram, where a lower temperature bound for the superconducting glasslike state is proposed.
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spelling Schaf, JacobPureur Neto, PauloKunzler, Julio Vitor2014-09-23T02:12:16Z19890163-1829http://hdl.handle.net/10183/103603000014856We report systematic field-cooled (PC) and zero-field-cooled (ZPC) diamagnetic susceptibility measurements in polycrystalline samples of the high-Tc oxide superconductors RBa2Cu30 7, where R =Y, Eu, or Gd. We focus mainly on the temperature range near T0 where the PC and ZPC curves split up below a characteristic temperature, similar to the behavior of spin glasses. This temperature depends on the applied magnetic field and defines a crossover line in the H-Tplane separating ergodic and nonergodic behavior, in close resemblance to what is found in conventional spin glasses. We suggest that this is a general characteristic of the ceramic oxide superconductors. Moreover, our data allow us to obtain a more detailed high-temperature H-Tphase diagram, where a lower temperature bound for the superconducting glasslike state is proposed.application/pdfengPhysical review. B, Condensed matter. New York. Vol. 40, no. 10 (Oct. 1989), p. 6948-6954Condutividade elétricaSupercondutividadeAltas temperaturasPropriedades eletronicas, magneticas e termodinamicas dos solidosGlass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7Estrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000014856.pdf000014856.pdfTexto completo (inglês)application/pdf1053247http://www.lume.ufrgs.br/bitstream/10183/103603/1/000014856.pdf3f053db5ac67bee034f9d11e14eaf303MD51TEXT000014856.pdf.txt000014856.pdf.txtExtracted Texttext/plain33216http://www.lume.ufrgs.br/bitstream/10183/103603/2/000014856.pdf.txt482518afb251c6f1d97170108d25730bMD52THUMBNAIL000014856.pdf.jpg000014856.pdf.jpgGenerated Thumbnailimage/jpeg1973http://www.lume.ufrgs.br/bitstream/10183/103603/3/000014856.pdf.jpg558bdbd6076550ea07af58af9a66f2e5MD5310183/1036032018-10-05 08:46:02.131oai:www.lume.ufrgs.br:10183/103603Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-05T11:46:02Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
title Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
spellingShingle Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
Schaf, Jacob
Condutividade elétrica
Supercondutividade
Altas temperaturas
Propriedades eletronicas, magneticas e termodinamicas dos solidos
title_short Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
title_full Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
title_fullStr Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
title_full_unstemmed Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
title_sort Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
author Schaf, Jacob
author_facet Schaf, Jacob
Pureur Neto, Paulo
Kunzler, Julio Vitor
author_role author
author2 Pureur Neto, Paulo
Kunzler, Julio Vitor
author2_role author
author
dc.contributor.author.fl_str_mv Schaf, Jacob
Pureur Neto, Paulo
Kunzler, Julio Vitor
dc.subject.por.fl_str_mv Condutividade elétrica
Supercondutividade
Altas temperaturas
Propriedades eletronicas, magneticas e termodinamicas dos solidos
topic Condutividade elétrica
Supercondutividade
Altas temperaturas
Propriedades eletronicas, magneticas e termodinamicas dos solidos
description We report systematic field-cooled (PC) and zero-field-cooled (ZPC) diamagnetic susceptibility measurements in polycrystalline samples of the high-Tc oxide superconductors RBa2Cu30 7, where R =Y, Eu, or Gd. We focus mainly on the temperature range near T0 where the PC and ZPC curves split up below a characteristic temperature, similar to the behavior of spin glasses. This temperature depends on the applied magnetic field and defines a crossover line in the H-Tplane separating ergodic and nonergodic behavior, in close resemblance to what is found in conventional spin glasses. We suggest that this is a general characteristic of the ceramic oxide superconductors. Moreover, our data allow us to obtain a more detailed high-temperature H-Tphase diagram, where a lower temperature bound for the superconducting glasslike state is proposed.
publishDate 1989
dc.date.issued.fl_str_mv 1989
dc.date.accessioned.fl_str_mv 2014-09-23T02:12:16Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/103603
dc.identifier.issn.pt_BR.fl_str_mv 0163-1829
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. B, Condensed matter. New York. Vol. 40, no. 10 (Oct. 1989), p. 6948-6954
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