Study of the yttrium and zinc substitutions effects in Bi2Sr2CaCu2O8+δ compounds by transport measurements
| hal.structure.identifier | GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) [GREMAN] | |
| dc.contributor.author | PIGNON, Bruno | |
| hal.structure.identifier | GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) [GREMAN] | |
| dc.contributor.author | AUTRET-LAMBERT, Cécile | |
| hal.structure.identifier | GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) [GREMAN] | |
| dc.contributor.author | RUYTER, Antoine | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DECOURT, Rodolphe | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | BASSAT, Jean-Marc. | |
| hal.structure.identifier | GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) [GREMAN] | |
| dc.contributor.author | MONOT-LAFFEZ, I. | |
| hal.structure.identifier | GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) [GREMAN] | |
| dc.contributor.author | AMMOR, Larbi | |
| dc.date.issued | 2008 | |
| dc.identifier.issn | 0921-4534 | |
| dc.description.abstractEn | The effects of yttrium Y and zinc Zn substitution on calcium Ca and cupper Cu sites in Bi2Sr2CaCu2O8+δ compounds have been investigated by resistivity measurements. At high temperature, after a superconducting transition, the electrical behaviour evolves from a metallic state in compounds with a weak Y concentration into a semi-conducting state (hopping conduction) in compounds with a large Y concentration. Similarly, the Zn substitution modifies the electrical behaviour from metallic to insulating with a much lower concentration comparatively to Y. In the two cases, the semi-conducting behaviour is described by hopping between localised states in the conduction band. This localization is explained by the random distribution of the doping elements which originates from the Y/Zn and Cu wave-functions overlap. The obtained results show the localization is improved in the case of Zn. Consequently, it is suggested that the direct substitution of Zn into the planes leads to a greater overlap. Moreover, the superconducting transition (critical temperature: TC) shows an irregular depression when Zn is substituted. According to an X-Ray diffraction study, this result can be interpreted by internal micro-strains in the structure. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Bi-2212 | |
| dc.subject.en | Y and Zn codoping | |
| dc.subject.en | Transport properties | |
| dc.subject.en | Inhomogeneity | |
| dc.subject.en | Localization | |
| dc.title.en | Study of the yttrium and zinc substitutions effects in Bi2Sr2CaCu2O8+δ compounds by transport measurements | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.physc.2007.09.014 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Physica C: Superconductivity and its Applications | |
| bordeaux.page | 865-871 | |
| bordeaux.volume | 468 | |
| bordeaux.issue | 11-12 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00300701 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00300701v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physica%20C:%20Superconductivity%20and%20its%20Applications&rft.date=2008&rft.volume=468&rft.issue=11-12&rft.spage=865-871&rft.epage=865-871&rft.eissn=0921-4534&rft.issn=0921-4534&rft.au=PIGNON,%20Bruno&AUTRET-LAMBERT,%20C%C3%A9cile&RUYTER,%20Antoine&DECOURT,%20Rodolphe&BASSAT,%20Jean-Marc.&rft.genre=article |
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