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Condensed Matter > Strongly Correlated Electrons

arXiv:2312.14381 (cond-mat)
[Submitted on 22 Dec 2023 (v1), last revised 13 Nov 2024 (this version, v3)]

Title:On the cuprates' universal waterfall feature: evidence of a momentum-driven crossover

Authors:Benjamin Bacq-Labreuil, Chafic Fawaz, Yuichi Okazaki, Yukiko Obata, Hervé Cercellier, Patrick Lefevre, François Bertran, David Santos-Cottin, Hajime Yamamoto, Ikuya Yamada, Masaki Azuma, Koji Horiba, Hiroshi Kumigashira, Matteo d'Astuto, Silke Biermann, Benjamin Lenz
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Abstract:We study two related universal anomalies of the spectral function of cuprates, so called waterfall and high-energy kink features, by a combined cellular dynamical mean-field theory and angle-resolved photoemission study for the oxychloride Na$_x$Ca$_{2-x}$CuO$_2$Cl$_2$ (Na-CCOC). Tracing their origin back to an interplay of spin-polaron and local correlation effects both in undoped and hole-doped (Na-)CCOC, we establish them as a universal crossover between regions differing in the momentum dependence of the coupling and not necessarily in the related quasiparticles' energies. The proposed scenario extends to doping levels coinciding with the cuprate's superconducting dome and motivates further investigations of the fate of spin-polarons in the superconducting phase.
Comments: Main text (8 pages, 4 figures) with supplemental information (8 pages, 9 figures, 1 table), revised, added one section to supplemental information
Subjects: Strongly Correlated Electrons (cond-mat.str-el)
Cite as: arXiv:2312.14381 [cond-mat.str-el]
  (or arXiv:2312.14381v3 [cond-mat.str-el] for this version)
  https://doi.org/10.48550/arXiv.2312.14381

Submission history

From: Benjamin Bacq-Labreuil [view email]
[v1] Fri, 22 Dec 2023 02:13:27 UTC (1,831 KB)
[v2] Mon, 8 Jul 2024 21:32:14 UTC (2,228 KB)
[v3] Wed, 13 Nov 2024 09:22:27 UTC (2,435 KB)
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