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DTSTART;TZID=Europe/Paris:20260210T140000
DTEND;TZID=Europe/Paris:20260210T150000
DTSTAMP:20260408T113520
CREATED:20260207T045156Z
LAST-MODIFIED:20260209T131732Z
UID:11801-1770732000-1770735600@fermi.univ-tlse3.fr
SUMMARY:Corrélations électroniques modulables dans 135 métaux Kagomé. - (Matteo Crispino / LPT / Seminar). -10/02/2026\, 14H
DESCRIPTION:Séminaire LPT \nMatteo Crispino ((Université de Wurtzbourg) \nSeminar LPT\, 10/02/2026\, 14H\, 3R4\, salle de conférence \nSummary : \nKagome metals exhibit rich correlated-electron physics\, yet a systematic understanding of the degree of correlation across transition-metal species remains elusive. Using density-functional theory plus multi-orbital slave-spin mean-field theory\, we investigate electronic correlations in the Ti-\, V-\, and Cr-based 135 compounds with Sb and Bi pnictogens. We find that the significantly stronger degree of correlation of the Cr-based materials compared to Ti and V can only be explained through the synergy of two effects: the larger electron filling of the d-shell and the reduced characteristic kinetic energy. We put forward that the substitution of Sb with Bi strengthens correlations in all compounds and make the prediction that the-yet-to-be-synthesized CsCr3Bi5 must be the most strongly correlated member of the entire family. These findings provide a quantitative\, band-structure-based framework for understanding and predicting correlation strength in Kagome metals.
URL:https://fermi.univ-tlse3.fr/event/tba-matteo-crispino-lpt-seminar-10-02-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
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