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arXiv · 2107.02623

Enhancement of the pinning potential in a single-crystal superconductor FeTe0.65Se0.35 under the influence of hydrogen sorption

V. P. Timofeev·S. I. Bondarenko·V. V. Meleshko·Yu. A. Savina·A. Wiśniewski
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Abstract

As a result of experimental studies of the single-crystal iron-chalcogenide compound FeTe0.65Se0.35, the effect of structural transitions caused by hydrogen sorption on the magnetic and current-carrying properties of a superconductor has been established. An increase in the volume-averaged effective pinning potential (and the associated critical current density) after the process of hydrogen sorption at temperatures up to 150 {\deg}C - 200 {\deg}C can be explained by the appearance of additional pinning centers due to the local action of implanted H ions on its crystal structure and electronic states. It was confirmed that hydrogenation is an efficient tool for increasing flux pining properties of superconductors.

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V. P. Timofeev, S. I. Bondarenko, V. V. Meleshko, Yu. A. Savina, A. Wiśniewski. 2021-07-06. Enhancement of the pinning potential in a single-crystal superconductor FeTe0.65Se0.35 under the influence of hydrogen sorption. https://doi.org/10.1063/10.0006062

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