Diffusion coalescence in НоBa2Cu3O7−xsingle crystals under the application of hydrostatic pressure

Boiko, Yu. I.; Богданов, В. В.; Вовк, Р. В.; Khadzhaj, G. Ya.; Kamchatnaya, S. N.; Goulatis, Ι. L.; Chroneos, Alexander

doi:10.1088/2053-1591/aa88f3

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…The exponential term in Eq. 3 describes the "saturation" of the resistivity 27,30,31 that is, it chiefly contributes in the high-temperature region.…”

Section: A Normal Resistance and Excess Conductivitymentioning

confidence: 99%

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Influence of annealing on the electrical resistance of YBCO single crystals

Вовк

Khadzhai

Nazyrov

et al. 2018

J Mater Sci: Mater Electron

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The effect of annealing on the basal-plane electrical resistivity of the YBa2Cu3O 7−δ single crystals is studied in a broad range of oxygen contents. Within the framework of s-d scattering of electrons by phonons, an increase in the oxygen deficit index, δ, leads to a significant increase in the Debye temperature, θ, which is associated with the isotropization of the phonon spectrum as the concentration of oxygen vacancies increases. Near the optimal doping, the role of the paraconductivity becomes crucial, whereas its contribution decreases with increasing δ. At large values of δ some deviations from the s-d model of electron scattering by phonons are observed at room temperature, while no paraproductivity is observed. In the superconducting transition region, a 2D-3D crossover is observed, which shifts in the direction of Tc with increasing δ. The estimate for the transverse coherence length is about 1Å.

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“…The exponential term in Eq. 3 describes the "saturation" of the resistivity 27,30,31 that is, it chiefly contributes in the high-temperature region.…”

Section: A Normal Resistance and Excess Conductivitymentioning

confidence: 99%

“…(3) can be associated with various mechanisms and hence, it can have different forms [26][27][28]30,[37][38][39] .…”

Section: A Normal Resistance and Excess Conductivitymentioning

confidence: 99%

Influence of annealing on the electrical resistance of YBCO single crystals

Вовк

Khadzhai

Nazyrov

et al. 2018

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

show abstract

Annealing of defects after irradiation of YBCO single crystals with fast electrons

Khadzhai

Вовк

Nazyrov

et al. 2019

Physica C: Superconductivity and its Applications

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Lanthanide doping and external parameters in RBa2Cu3O7–δ superconductors: A brief review

Goulatis

Chroneos

2023

Low Temperature Physics

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The invention of superconductivity was a major advance of solid state physics. In the present review, we briefly discuss the emergence of RBa2Cu3O7–δ (R are lanthanides). In the first part, we consider the impact of lanthanide doping and the intricacy of the praseodymium anomaly. In the second part, we discuss the impact of external parameters such as pressure and electron irradiation on the critical superconducting parameters. This brief review concludes with future perspectives of the field, considering recent advances.

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Diffusion coalescence in НоBa₂Cu₃O_7−xsingle crystals under the application of hydrostatic pressure

Cited by 6 publications

References 22 publications

Influence of annealing on the electrical resistance of YBCO single crystals

Influence of annealing on the electrical resistance of YBCO single crystals

Annealing of defects after irradiation of YBCO single crystals with fast electrons

Lanthanide doping and external parameters in RBa2Cu3O7–δ superconductors: A brief review

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