Fluctuation Effects And Order Parameter Symmetry In The Cuprate Superconductors

Abstract

Effect of phase fluctuations on superconducting states with anisotropic order parameters is studied in a BCS like lattice model of cuprate superconductors. The degradation of the mean field transition temperature due to phase fluctuations is estimated within a Kosterlitz-Thouless scenario. Values of the interaction parameters for optimal doping, corresponding to a stable superconducting state of $S_{xy}$ symmetry, which fit the nodal structure of the superconducting order parameter in the Bi2212 compound, are obtained. The angular position of the node is found to be insensitive to the dopant concentration.

Latex file, 8 output pages, 5 figures (available from Authors on request), to appear in Europhysics Letters

References in corpus (2)

• Phenomenological Models for the Gap Anisotropy of Bi-2212 as Measured by ARPES
• Phenomenological BCS theory of the high-$T_c$ cuprates

Cited by in corpus (10)

• Phase segregation of superconductivity and ferromagnetism at LaAlO${}_3$/SrTiO${}_3$ interface
• Thermodynamic and electromagnetic properties of the eta-pairing superconductivity in the Penson-Kolb model
• Gap anisotropy in the angle-resolved photoemission spectroscopy of Bi_2Sr_2CaCu_2O_{8+δ}
• Superconducting gap within a modified interlayer tunneling model
• Order Parameter Symmetry in Doped YBCO Systems
• Inhomogeneous phase stiffness in two-dimensional $s$-wave disordered superconductors
• An extended pair tunneling model: studies on bilayer splitting and some superconducting state properties
• Influence of structural disorder and Coulomb interactions in the superconductor-insulator transition applied to boron doped diamond
• Thermodynamic Properties of d_{x^2-y^2}+id_{xy} Superconductor
• Effects of c-axis Hopping in the Interlayer Tunneling Model of High-Tc Layered Cuprates