NDLI: Effect of defects on the basal-plane resistivity of $$\hbox {YBa}_2\hbox {Cu}_3\hbox {O}_{7-\delta }$$ and $$\hbox {Y}_{1-y}\hbox {Pr}_y\hbox {Ba}_2\hbox {Cu}_3\hbox {O}

Content Provider	Springer Nature Link
Author	Vovk, Ruslan V. Khadzhai, Georgij Ya. Dobrovolskiy, Oleksandr V. Vovk, Nikolaj R. Nazyrov, Zarif F.
Copyright Year	2014
Abstract	Temperature dependences of the basal-plane resistivity of $$\hbox {YBa}_2\hbox {Cu}_3\hbox {O}_{7-\delta }$$ single crystals with different oxygen deficiency levels $$\delta$$ are investigated in the temperature interval $$T_c$$ –300 K. In this temperature range, these dependences, alike those for $$\hbox {Y}_{1-y}\hbox {Pr}_y\hbox {Ba}_2\hbox {Cu}_3\hbox {O}_{7-x}$$ with various Pr content, $$y$$ , can be described with great accuracy by an expression accounting for electron scattering on phonons and defects, as well as the fluctuation conductivity within the 3D Aslamazov–Larkin model. Our analysis shows that for both compounds the scattering characteristics for the charge carriers in the layer planes are determined by defects in the $$\hbox {CuO}_2$$ layers, which arise owing to changes in the oxygen deficiency or in the Pr content. Our data suggest that the fluctuation parameters are affected by the total defect concentration rather than by the oxygen deficiency. The dependences $$T_c(\delta )$$ for $$\hbox {YBa}_2\hbox {Cu}_3\hbox {O}_{7-\delta }$$ and $$T_c(y)$$ for $$\hbox {Y}_{1-y}\hbox {Pr}_y\hbox {Ba}_2\hbox {Cu}_3\hbox {O}_{7-x}$$ are similar, especially for $$y,\delta <0.2$$ , and both can be ascribed to the suppression of superconductivity by defects.
Starting Page	1435
Ending Page	1440
Page Count	6
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	26
Issue Number	3
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2014-12-06
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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