Document Type

Article

Publication Version

Published Version

Publication Date

10-2014

Journal or Book Title

Physical Review X

Volume

4

Issue

4

First Page

041032

DOI

10.1103/PhysRevX.4.041032

Abstract

A single crystal of isovalently substituted Ba(Fe1−xRux)2As2 (x=0.24) is sequentially irradiated with 2.5 MeV electrons up to a maximum dose of 2.1×1019 e−/cm2. The electrical resistivity is measuredin situ at T=22  K during the irradiation and ex situ as a function of temperature between subsequent irradiation runs. Upon irradiation, the superconducting transition temperature Tc decreases and the residual resistivity ρ0 increases. We find that electron irradiation leads to the fastest suppression of Tccompared to other types of artificially introduced disorder, probably due to the strong short-range potential of the pointlike irradiation defects. A more detailed analysis within a multiband scenario with variable scattering potential strength shows that the observed Tc versus ρ0 is fully compatible with s±pairing, in contrast to earlier claims that this model leads to a too rapid suppression of Tc with scattering.

Comments

This article is from Physical Review X 4 (2014): 041032, doi:10.1103/PhysRevX.4.041032. Posted with permission.

Rights

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Copyright Owner

The authors

Language

en

File Format

application/pdf

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