Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/104299 |
Resumo: | The effects of hydrostatic pressure up to 1.11 GPa on the in-plane fluctuation conductivity of YBa2Cu3O7−d are investigated. The experiments are focused on the asymptotic region closely above Tc where a threedimensional Gaussian and genuine critical regimes are identified. From the analysis of the Gaussian critical amplitude one deduces that the off-plane coherence length E(0) does not change significantly with pressure in the studied range. At low applied pressures the asymptotic critical exponent indicates the occurrence of a scaling beyond three-dimensional XY. However, at the highest studied pressure, this exponent assumes a value consistent with the predictions of the full-dynamic three-dimensional XY universality class. The width of the critical regime, as measured by the Ginzburg criterium, increases significantly with pressure. This result is related to a pressure-induced reduction of the in-plane coherence length Eab(0). |
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Ferreira, Leticie MendoncaPureur Neto, PauloBorges, Hortencio A.Lejay, Pascal2014-10-09T02:13:08Z20041098-0121http://hdl.handle.net/10183/104299000513244The effects of hydrostatic pressure up to 1.11 GPa on the in-plane fluctuation conductivity of YBa2Cu3O7−d are investigated. The experiments are focused on the asymptotic region closely above Tc where a threedimensional Gaussian and genuine critical regimes are identified. From the analysis of the Gaussian critical amplitude one deduces that the off-plane coherence length E(0) does not change significantly with pressure in the studied range. At low applied pressures the asymptotic critical exponent indicates the occurrence of a scaling beyond three-dimensional XY. However, at the highest studied pressure, this exponent assumes a value consistent with the predictions of the full-dynamic three-dimensional XY universality class. The width of the critical regime, as measured by the Ginzburg criterium, increases significantly with pressure. This result is related to a pressure-induced reduction of the in-plane coherence length Eab(0).application/pdfengPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 69, no. 21 (June 2004), 212505 4p.FísicaEffects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/Estrangeiroinfo: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:UFRGSORIGINAL000513244.pdf000513244.pdfTexto completo (inglês)application/pdf59209http://www.lume.ufrgs.br/bitstream/10183/104299/1/000513244.pdf5a96ccd43f9bb5f7015a35930e3664e0MD51TEXT000513244.pdf.txt000513244.pdf.txtExtracted Texttext/plain16876http://www.lume.ufrgs.br/bitstream/10183/104299/2/000513244.pdf.txt4b501739264de99b2b62d76aa1622a53MD52THUMBNAIL000513244.pdf.jpg000513244.pdf.jpgGenerated Thumbnailimage/jpeg1931http://www.lume.ufrgs.br/bitstream/10183/104299/3/000513244.pdf.jpg75d486a9d5ac8045b17fe76177b11a65MD5310183/1042992018-10-09 08:52:52.341oai:www.lume.ufrgs.br:10183/104299Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-09T11:52:52Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/ |
title |
Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/ |
spellingShingle |
Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/ Ferreira, Leticie Mendonca Física |
title_short |
Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/ |
title_full |
Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/ |
title_fullStr |
Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/ |
title_full_unstemmed |
Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/ |
title_sort |
Effects of pressure on the fluctuation conductivity of YBa/sub 2/Cu/sub 3/O/sub 7/ |
author |
Ferreira, Leticie Mendonca |
author_facet |
Ferreira, Leticie Mendonca Pureur Neto, Paulo Borges, Hortencio A. Lejay, Pascal |
author_role |
author |
author2 |
Pureur Neto, Paulo Borges, Hortencio A. Lejay, Pascal |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Ferreira, Leticie Mendonca Pureur Neto, Paulo Borges, Hortencio A. Lejay, Pascal |
dc.subject.por.fl_str_mv |
Física |
topic |
Física |
description |
The effects of hydrostatic pressure up to 1.11 GPa on the in-plane fluctuation conductivity of YBa2Cu3O7−d are investigated. The experiments are focused on the asymptotic region closely above Tc where a threedimensional Gaussian and genuine critical regimes are identified. From the analysis of the Gaussian critical amplitude one deduces that the off-plane coherence length E(0) does not change significantly with pressure in the studied range. At low applied pressures the asymptotic critical exponent indicates the occurrence of a scaling beyond three-dimensional XY. However, at the highest studied pressure, this exponent assumes a value consistent with the predictions of the full-dynamic three-dimensional XY universality class. The width of the critical regime, as measured by the Ginzburg criterium, increases significantly with pressure. This result is related to a pressure-induced reduction of the in-plane coherence length Eab(0). |
publishDate |
2004 |
dc.date.issued.fl_str_mv |
2004 |
dc.date.accessioned.fl_str_mv |
2014-10-09T02:13:08Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/104299 |
dc.identifier.issn.pt_BR.fl_str_mv |
1098-0121 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000513244 |
identifier_str_mv |
1098-0121 000513244 |
url |
http://hdl.handle.net/10183/104299 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 69, no. 21 (June 2004), 212505 4p. |
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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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