Abstract
The influence of proton irradiation on the fluctuation-induced magnetoconductivity of high quality FeSe1−xTex (x = 0.4, 0.55) (FST) thin films has been investigated. The measurements were performed with magnetic fields up to 13 T applied in the two main crystal directions. The results were interpreted in terms of the Ginzburg–Landau approach for three-dimensional materials under a total-energy cutoff. The analysis shows that properly-tuned proton irradiation does not appreciably affect fundamental superconducting parameters like the Tc value, the upper critical fields or the anisotropy. This has important consequences from the point of view of possible applications due to the enhancement of vortex pinning induced by irradiation.
Highlights
The discovery of iron-based superconductors has added valuable knowledge to research into the high-Tc superconducting mechanism [1]
The Tc value (20.3 K) is determined from the transition midpoint at the zero applied field. This Tc value is larger than the one for bulk FeSeTe (14 K) [28], but is in agreement with the one for epitaxial FeSe0.5Te0.5 thin films [29, 30]
Superconducting FST thin films were grown by pulsed laser deposition (PLD)
Summary
The results were interpreted in terms of the Ginzburg–Landau approach for three-dimensional materials under a total-energy cutoff. The analysis shows that properly-tuned proton irradiation does not appreciably affect fundamental superconducting parameters like the Tc value, the upper critical fields or the anisotropy. This has important consequences from the point of view of possible applications due to the enhancement of vortex pinning induced by irradiation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
