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X-ORIGINAL-URL:https://www.lps.u-psud.fr/
X-WR-CALNAME:Laboratoire de physique des Solides
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BEGIN:VEVENT
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DTSTART;TZID=Europe/Paris:20251211T110000
DTEND;TZID=Europe/Paris:20251211T180000
DTSTAMP:20251203T092000
UID:MEC-f740c8d9c193f16d8a07d3a8a751d13f@lps.u-psud.fr
CREATED:20251203
LAST-MODIFIED:20251203
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:Maria CHATZIELEFTHERIOU : Local and non-local electronic correlations: from toy models to realistic material simulations
DESCRIPTION:\nStrongly correlated electronic systems exhibit intriguing properties and highly complex phase diagrams, including metal-to-insulator transitions, magnetic/charge orderings and the field’s holy grail: high temperature superconductivity. I will present results using state-of-the-art numerical techniques that allow for an accurate description of both strong local electronic correlations and spatial fluctuations in such systems.     I will first discuss the application of this approach on the study of a simple model, relevant for a series of materials, where we have analyzed the interplay of Mott physics and magnetic fluctuations [1]. We have identified the Slater and Heisenberg regimes in the phase diagram, which are separated by a crossover region of competing spatial and local electronic correlations. I will, moreover, present a work on the perovskite Sr2RuO4 compound, where we have performed realistic calculations and have accurately reproduced the experimentally estimated magnetic susceptibility – both its strength and its structure -, resolving a long-standing discrepancy between theory and experiment [2].[1] M. Chatzieleftheriou, S. Biermann, E. Stepanov, PRL 132, 236504 (2024)[2] M. Chatzieleftheriou, A. N. Rudenko, Y. Sidis, S. Biermann,  E. A. Stepanov, PRB 112 (19), 195118 (2025)\n
URL:https://www.lps.u-psud.fr/events/maria-chatzieleftheriou-local-and-non-local-electronic-correlations-from-toy-models-to-realistic-material-simulations/
ORGANIZER;CN=Andrej Meszaros:MAILTO:
CATEGORIES:Séminaire de la Théorie de la Matière Condensée,Séminaires
LOCATION:Moyen amphi (LPS) + ONLINE (Zoom)
ATTACH;FMTTYPE=image/jpeg:https://www.lps.u-psud.fr/wp-content/uploads/2025/12/Maria.jpg
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