Using electron irradiation to probe iron-based superconductors. (14th May 2018)

• Record Type: Journal Article
• Authors: Cho, Kyuil; Kończykowski, M; Teknowijoyo, S; Tanatar, M A; Prozorov, R
• Is Part Of: Superconductor science & technology. Volume 31:Number 6(2018:Jun.)
• Publication Date: 2018-05-14
• Subjects: iron-based superconductors -- disorder -- electron irradiation -- unconventional superconductors -- London penetration depth -- superconductors; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/1361-6668/aabfa8
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: High-energy electron irradiation at low temperatures is an efficient and controlled way to create vacancy–interstitial Frenkel pairs in a crystal lattice, thereby inducing nonmagnetic point-like scattering centers. In combination with London penetration depth and resistivity measurements, the electron irradiation was used as a phase-sensitive probe to study the superconducting order parameter in iron-based superconductors (FeSCs), lending strong support to sign-changing s ± pairing. Here, we review the key results of the effect of electron irradiation in FeSCs.