High energy electron irradiation is an efficient way to create vacancy-interstitial Frenkel pairs in crystal lattice, thereby inducing controlled non-magnetic point - like scattering centers. In combination with London penetration depth and resistivity measurements, the irradiation was particularly useful as a phase - sensitive probe of the superconducting order parameter in iron - based superconductors lending strongest support to sign - changing s± pairing. Here we review the key results on the effect of electron irradiation in iron-based superconductors.
@article{arxiv.1803.01956,
title = {Using electron irradiation to probe iron - based superconductors},
author = {Kyuil Cho and M. Konczykowski and S. Teknowijoyo and M. A. Tanatar and R. Prozorov},
journal= {arXiv preprint arXiv:1803.01956},
year = {2018}
}