Nodeless superconducting gap in NdFeAsO$_{0.9}$F$_{0.1}$ single crystals from anisotropic penetration depth studies

TL;DR

This study investigates the superconducting gap structure of NdFeAsO$_{0.9}$F$_{0.1}$ single crystals using anisotropic penetration depth measurements, aiming to determine whether the gap has nodes or is nodeless.

Contribution

The paper provides experimental evidence for a nodeless superconducting gap in NdFeAsO$_{0.9}$F$_{0.1}$, contributing to understanding the pairing symmetry in iron-based superconductors.

Findings

Superconducting gap is nodeless in NdFeAsO$_{0.9}$F$_{0.1}$

Anisotropic penetration depth measurements support s-wave pairing symmetry

Results suggest fully gapped superconductivity in this compound

Abstract

This paper is no longer active and will NOT appear in print. For new data and analysis, please see: arXiv:0903.2220