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Phenomenology and Sign Change of the Hall Resistivity near the Superconducting Transition of Polycrystalline DyBa2Cu3O7

2000; Wiley; Volume: 220; Issue: 1 Linguagem: Inglês

10.1002/1521-3951(200007)220

1521-3951

J. Roa‐Rojas, D.A. Landı́nez Téllez, P. Pureur,

Magnetic properties of thin films

physica status solidi (b)Volume 220, Issue 1 p. 509-512 Original Paper Phenomenology and Sign Change of the Hall Resistivity near the Superconducting Transition of Polycrystalline DyBa2Cu3O7–δ J. Roa-Rojas, J. Roa-Rojas jroa@escuelaing.edu.co Instituto de Física, Universidade Federal do Rio Grande do Sul, P.O. Box 15051, 91501-970 Porto Alegre RS, BrazilSearch for more papers by this authorD.A. Landínez Téllez, D.A. Landínez Téllez Departamento de Física, Universidade Federal de Pernambuco, 50670-910 Recife PE, BrazilSearch for more papers by this authorP. Pureur, P. Pureur Instituto de Física, Universidade Federal do Rio Grande do Sul, P.O. Box 15051, 91501-970 Porto Alegre RS, BrazilSearch for more papers by this author J. Roa-Rojas, J. Roa-Rojas jroa@escuelaing.edu.co Instituto de Física, Universidade Federal do Rio Grande do Sul, P.O. Box 15051, 91501-970 Porto Alegre RS, BrazilSearch for more papers by this authorD.A. Landínez Téllez, D.A. Landínez Téllez Departamento de Física, Universidade Federal de Pernambuco, 50670-910 Recife PE, BrazilSearch for more papers by this authorP. Pureur, P. Pureur Instituto de Física, Universidade Federal do Rio Grande do Sul, P.O. Box 15051, 91501-970 Porto Alegre RS, BrazilSearch for more papers by this author First published: 10 July 2000 https://doi.org/10.1002/1521-3951(200007)220:1 3.0.CO;2-LCitations: 2AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Measurements of the temperature dependence of the electrical resistivity and the Hall effect in the normal and superconducting states of a ceramic DyBa2Cu3O7–δ superconductor are reported. In high temperatures the diagonal resistivity is proportional to T, whereas the Hall response exhibits a 1/T dependence and the cotangent of the Hall angle is proportional to T2. Upon decreasing the temperature, the Hall response shows a sign reversal close to Tc, goes through a negative maximum and vanishes close to the so-called zero-resistance temperature. The aim of this report is to show that the sign change occurs in the temperature region dominated by thermal fluctuations in the order parameter. Citing Literature Volume220, Issue1July 2000Pages 509-512 RelatedInformation