biostudies-literatureUnknown27(4)Grimaldi GEuropean Cooperation in Science and TechnologyMIUREni SpADiscovery of iron-based superconductors paved the way to a competitor of high-temperature superconductors, easier to produce, better performing in high fields, and promising to be less expensive. Critical parameters are investigated by resistivity measurements as a function of temperature, field, and angle <i>R</i>(<i>T,H,θ</i>). This work presents a deep analysis of <i>H</i>-<i>θ</i> phase diagram of PLD-processed Fe(Se,Te) superconducting films, thus revealing material and pinning anisotropy at once. By selecting different thresholds along the <i>R</i>(<i>T,H,θ</i>) curves, all possible regimes emerge. Surprisingly, anisotropy arises moving from the upper critical field toward the irreversibility line: gradually a non-monotonous transition from 3D to 2D, and backward to 3D occurs. Although Fe(Se,Te) appears as a 3D superconductor, its anisotropic pinning landscape shows up similarities with an intrinsic layered superconductor and Fe(Se,Te) definitively mimics YBCO. We propose a general method to disentangle, in any other superconductor, material dimensionality and pinning anisotropy that are key constraints for applications.iScience109422https://www.ebi.ac.uk/biostudies/studies/S-EPMC10966314biostudies-literatureUnveiling intrinsic material and extrinsic pinning dimensionality in superconductors: Why Fe(Se,Te) is able to mimic YBCO.PMC10966314Rizzo FGrimaldi GBraccini VLeo ANigro AAugieri AIebole MPolichetti MScuderi MCelentano GGalluzzi AKhan MRfalseUnveiling intrinsic material and extrinsic pinning dimensionality in superconductors: Why Fe(Se,Te) is able to mimic YBCO.Discovery of iron-based superconductors paved the way to a competitor of high-temperature superconductors, easier to produce, better performing in high fields, and promising to be less expensive. Critical parameters are investigated by resistivity measurements as a function of temperature, field, and angle <i>R</i>(<i>T,H,θ</i>). This work presents a deep analysis of <i>H</i>-<i>θ</i> phase diagram of PLD-processed Fe(Se,Te) superconducting films, thus revealing material and pinning anisotropy at once. By selecting different thresholds along the <i>R</i>(<i>T,H,θ</i>) curves, all possible regimes emerge. Surprisingly, anisotropy arises moving from the upper critical field toward the irreversibility line: gradually a non-monotonous transition from 3D to 2D, and backward to 3D occurs. Although Fe(Se,Te) appears as a 3D superconductor, its anisotropic pinning landscape shows up similarities with an intrinsic layered superconductor and Fe(Se,Te) definitively mimics YBCO. We propose a general method to disentangle, in any other superconductor, material dimensionality and pinning anisotropy that are key constraints for applications.2024-01-01T00:00:00Z2024 Apr2025-04-04T23:52:52.799Z2025-04-04T23:52:52.799ZS-EPMC109663143854456810.1016/j.isci.2024.109422