Effects of c-axis Hopping in the Interlayer Tunneling Model of High-Tc Layered Cuprates

TL;DR

This paper investigates how c-axis hopping affects the interlayer tunneling model in layered cuprates, showing that including pseudogap effects aligns theoretical predictions with experimental data on superconducting properties.

Contribution

It introduces a phenomenological suppression of c-axis hopping in the interlayer tunneling model, accounting for pseudogap effects and matching experimental observations.

Findings

Superconducting gap temperature dependence matches experiments.

Calculated T_c and gap values are consistent with observed data.

Model predicts T_c variation with interlayer coupling, testable in future studies.

Abstract

We consider the interlayer pair-tunneling model for layered cuprates, including an effective single particle hopping along the c-axis. A phenomenological suppression of the c-axis hopping matrix element, by the pseudogap in cuprate superconductors, is incorporated. At optimal doping, quantities characteristic to the superconducting state, such as the transition temperature and the superconducting gap are calculated. Results from our calculations are consistent with the experimental observations with the noteworthy point that, the superconducting gap as a function of temperature shows excellent match to the experimental data. Predictions within the model, regarding T_c variation with interlayer coupling, are natural outcomes which could be tested further.