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Disentangling Coherent and Incoherent Effects in Superconductor Photoemission Spectra via Machine Learning

2024/12/15 by K. H. Bohachov, Bohachov, K. H., A. A. Kordyuk +1
Materials Science · Physics and Astronomy · #Machine Learning in Materials Science #Electron and X-Ray Spectroscopy Techniques #Nuclear Physics and Applications

paper · pdf · doi:10.48550/arxiv.2412.11129

Abstract

Disentangling coherent and incoherent effects in the photoemission spectra of strongly correlated materials is generally a challenging problem due to the involvement of numerous parameters. In this study, we employ machine learning techniques, specifically Convolutional Neural Networks (CNNs), to address the long-standing issue of the bilayer splitting in superconducting cuprates. We demonstrate the effectiveness of CNN training on modeled spectra and confirm earlier findings that establish the presence of bilayer splitting across the entire doping range. Furthermore, we show that the magnitude of the splitting does not decrease with underdoping, contrary to expectations. This approach not only highlights the potential of machine learning in tackling complex physical problems but also provides a robust framework for advancing the analysis of electronic properties in correlated superconductors.

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