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. 2023 May 30;14:3116. doi: 10.1038/s41467-023-38763-4

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a The coefficient A^□ as a function of superconducting transition temperature (T_c). The error bars represent the s.d. The inset displays T_c dependence of (A^□)^0.5. b The summary of the correlation between A^□/A^□^max and T_c/T_c^max for the pressurized Ca₁₀(Pt₄As₈)((Fe_0.97Pt_0.03)₂As₂)₅ and Sr_0.74Na_0.26Fe₂As₂ superconductors, as well as other differently doped superconductors. The LCCO, LSCO and BFCA represent La₂₋_xCe_xCuO₄ superconductor [ref. ²⁶], La₂₋_xSr_xCuO₄ superconductor [refs. ^6,26] and Ba(Fe_1−xCo_x)₂As₂ superconductor [refs. ^26,35,36], respectively. The data about (TMTSF)₂PF₂ are taken from ref. ⁸.