Theoretical study of the role of pairing symmetries on the physical parameters of Fe-based superconductors

TL;DR

This theoretical study explores how different pairing symmetries affect the superconducting properties of Fe-based superconductors using a simplified one-band model, calculating key parameters like the SC gap and tunneling conductance.

Contribution

It introduces a one-band model with specific pairing symmetries and computes temperature-dependent superconducting parameters, providing insights into the role of pairing symmetry in Fe-based superconductors.

Findings

Superconducting gap varies with pairing symmetry and model parameters.

Tunneling conductance spectra depend on pairing symmetry and temperature.

Model captures evolution of superconducting properties with system parameters.

Abstract

For the newly discovered ironbased superconductors we propose a one band model for conduction band with first and secondnearestneighbor electron hoppings with two types of d wave and three types of s wave pairing symmetries for the superconductivity. We have calculated the Greens functions from which the temperature dependent superconducting (SC) gap and tunneling conductance are calculated and computed numerically. The evolution of the SC gap and the tunneling conductance spectra are investigated for different model parameters of the system.