Excess-conductivity of Nd0.1Y0.9Ba2Cu3O7−δ and Ca0.1Y0.9Ba2Cu3O7−δ superconductors: A quantitative comparison between results of aliovalent and isovalent substitutions in Y-site

Esmaeili, Asghar; Sedghi, H.

doi:10.1016/j.jallcom.2012.05.060

Cited by 10 publications

(2 citation statements)

References 25 publications

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“…As the temperature approaches T c , the number of Cooper pairs increases while the normal electron density decreases. Therefore, the resistivity decreases and the thermal fluctuations induce an excess conductivity ∆σ [6][7][8]. Therefore, resistivity versus temperature measurements in superconducting samples has been earlier explored to determine how the conductivity is affected by fluctuations of small regions of a sample in a superconducting state.…”

Section: Introductionmentioning

confidence: 99%

Order parameter effect critical fields and current of Y_1–xPr_x:123 superconductors

Sedky

Amin

2017

Materials Science-Poland

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Fluctuation induced conductivity by Pr substitution at Y sites of Y1-xPrx:123 superconductors is reported. It is found that the mean field temperature Tcmf, deduced from the peak of dρ/dT versus T plot, gradually decreases by increasing Pr up to 0.40. The order parameter dimensionality (OPD) is estimated from the slope of the logarithmic plot between excess conductivity Δσ and reduced temperature є. Interestingly, the crossover from 2D to 3D is obtained for samples with Pr = 0.00, 0.10 and 0.20, while with increasing Pr up to 0.40, the crossover from 0D to quasi-2D is obtained. On the other hand, the calculated values of interlayer coupling, coherence lengths, critical fields and critical current decrease with increasing Pr up to 0.20, but with the further increase of Pr, up to 0.40, they increase. The hole carriers/Cu ions anisotropy and G-L parameter gradually increase with Pr up to 0.40. Our results are discussed in terms of the effects of Pr substitution at Y site, such as oxygen rearrangements, anisotropy, hybridization and localization of holes in the overdoped region.

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Section: Introductionmentioning

confidence: 99%

Order parameter effect critical fields and current of Y_1–xPr_x:123 superconductors

Sedky

Amin

2017

Materials Science-Poland

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“…As the temperature approaches T c , the number of Cooper pairs increases, while the normal electron density decreases. Therefore, the resistivity decreases and the thermal fluctuations induce an excess conductivity Δσ [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Structural and Fluctuation Induced Excess Conductivity in R:1113 Superconductors

Sedky

Youssif

2016

Braz J Phys

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Relationship between pinning mechanism and excess conductivity analysis of x wt% C4H6O5 (x = 0.0, 4.0, and 6.0)-added bulk MgB2

Çakır

Koparan

Savaskan

2021

J Mater Sci: Mater Electron

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Excess-conductivity of Nd0.1Y0.9Ba2Cu3O7−δ and Ca0.1Y0.9Ba2Cu3O7−δ superconductors: A quantitative comparison between results of aliovalent and isovalent substitutions in Y-site

Cited by 10 publications

References 25 publications

Order parameter effect critical fields and current of Y_1–xPr_x:123 superconductors

Order parameter effect critical fields and current of Y_1–xPr_x:123 superconductors

Structural and Fluctuation Induced Excess Conductivity in R:1113 Superconductors

Relationship between pinning mechanism and excess conductivity analysis of x wt% C4H6O5 (x = 0.0, 4.0, and 6.0)-added bulk MgB2

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Excess-conductivity of Nd0.1Y0.9Ba2Cu3O7−δ and Ca0.1Y0.9Ba2Cu3O7−δ superconductors: A quantitative comparison between results of aliovalent and isovalent substitutions in Y-site

Cited by 10 publications

References 25 publications

Order parameter effect critical fields and current of Y1–xPrx:123 superconductors

Order parameter effect critical fields and current of Y1–xPrx:123 superconductors

Structural and Fluctuation Induced Excess Conductivity in R:1113 Superconductors

Relationship between pinning mechanism and excess conductivity analysis of x wt% C4H6O5 (x = 0.0, 4.0, and 6.0)-added bulk MgB2

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Order parameter effect critical fields and current of Y_1–xPr_x:123 superconductors

Order parameter effect critical fields and current of Y_1–xPr_x:123 superconductors