Anisotropy of the gap parameter in the hole-doped cuprates

Abstract

The structure of the gap parameter (${\Delta }_k$) for the hole-doped cuprates has been studied. The obtained results indicate that the antinodal part of ${\Delta }_k$ is very weakly temperature dependent and above the critical temperature ($T_C$), it extends into the anomalous normal state to the pseudogap temperature. On the other hand, the values of ${\Delta }_k$, which are close to the nodal part, are strongly temperature dependent. The model has been tested for the $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{7-\delta }$ superconductor. It has been shown that the theoretical results agree with the experimental data.

9 pages, 5 figures

References in corpus (7)

• Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212
• Energy gaps in high-transition temperature cuprate superconductors
• Protected nodes and the collapse of the Fermi arcs in high Tc cuprates
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• Superconductivity distorted by the coexisting pseudogap in the antinodal region of Bi${}_{1.5}$Pb${}_{0.55}$Sr${}_{1.6}$La${}_{0.4}$CuO${}_{6+\delta }$: A photon-energy-dependent angle-resolved photoemission study

Cited by in corpus (7)

• Non-BCS thermodynamic properties of H2S superconductor
• Pressure effects on the unconventional superconductivity of the noncentrosymmetric LaNiC2
• Anisotropic evolution of energy gap in Bi2212 superconductor
• Thermodynamics of the hydrogen dominant potassium hydride superconductor at high pressure
• Pseudogap in Eliashberg approach based on electron-phonon and electron-electron-phonon interaction
• Non-BCS temperature dependence of energy gap in thin film electron-doped cuprates
• Unbalanced superconductivity induced by the constant electron-phonon coupling on a square lattice