# Effects of Ru Doping on the Transport Behavior and Superconducting Transition Temperature of NdFeAsO0.89F0.11

## TL;DR

This study investigates how Ru doping affects the transport properties and superconducting transition temperature of NdFeAsO0.89F0.11, revealing minimal Tc suppression and supporting the robustness of superconductivity against nonmagnetic impurities.

## Contribution

It demonstrates that Ru doping causes negligible Tc suppression, challenging the pair-breaking explanation for nonmagnetic impurities in this superconductor.

## Key findings

- Ru doping has a minimal effect on Tc.
- The suppression rate of Tc is too small to be explained by pair breaking.
- Results support the robustness of superconductivity against nonmagnetic impurities.

## Abstract

The transport behavior and superconducting transition temperature Tc of NdFe1-yRuyAsO0.89F0.11 have been studied for various y values. Because Ru impurities are isoelectronic to host Fe atoms, we basically expect that the number of electrons does not change with y, at least in the region of small y values. The results indicate that the rate of Tc suppression by Ru atoms is too small to be explained by the pair breaking effect of nonmagnetic impurities expected for the S+- symmetry, confirming our previous results for Co doping.

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Source: https://tomesphere.com/paper/0911.4584