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Superfluid density and critical current density in superconducting cuprates with an extended d-wave pairing symmetry

Author

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  • Orifjon K. Ganiev

    (Uzbekistan Academy of Sciences
    National University of Uzbekistan)

  • Bakhrom Ya. Yavidov

    (Nukus State Pedagogical Institute named after A’jiniyaz)

Abstract

In this paper, we have investigated superfluid density, $$\rho _\mathrm{s}$$ ρ s , and the critical current density, $$J_\mathrm{c}$$ J c , in cuprate superconductors. The Chandrasekhar and Einzel approach was applied to calculate the superconducting order parameter and superfluid density with different pairing scenario, such as isotropic s-, anisotropic s-wave, and nodal d-wave, as well as an extended d-wave symmetry of the gap. Moreover, the critical current density is calculated for the extended d-wave gap suggested by angle-resolved photoemission spectroscopy (ARPES) mesurements in anisotropic cuprate superconductors. The calculated results for the temperature-dependent superfluid density $$\rho _\mathrm{s}(T)$$ ρ s ( T ) and critical current density $$J_\mathrm{c}(T)$$ J c ( T ) were compared with the experimental data obtained for various cuprate superconductors. A good quantitative agreement was found between theory and experimental data for all cases considered. Graphic abstract

Suggested Citation

  • Orifjon K. Ganiev & Bakhrom Ya. Yavidov, 2021. "Superfluid density and critical current density in superconducting cuprates with an extended d-wave pairing symmetry," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 94(5), pages 1-9, May.
    • Handle: RePEc:spr:eurphb:v:94:y:2021:i:5:d:10.1140_epjb_s10051-021-00130-x
    DOI: 10.1140/epjb/s10051-021-00130-x
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