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. 2024 Jan 11;15:459. doi: 10.1038/s41467-024-44708-2

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© The Author(s) 2024

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a Differential conductance spectra featuring a Kondo peak at different junction transmissions τ. Dashed gray lines represent fits of the data to NRG calculations⁴⁸. b The Kondo temperature extracted from the fit in (a) as function of transmission τ in blue along with the critical field B_c, above which the Kondo peak starts splitting. c YSR state energy vs. Kondo temperature both scaled to the superconducting gap Δ. The dashed black curve represents the universal scaling predicted from the NRG model. The error bars are within the size of the markers.