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SUMMARY:Séminaire commun GREMAN-IDP:  Strongly correlated systems at equi
 librium and away from equilibrium
DTSTART:20260706T090000Z
DTEND:20260706T100000Z
DTSTAMP:20260614T025300Z
UID:indico-event-16135@indico.math.cnrs.fr
DESCRIPTION:Speakers: Maria Carolina O. Aguiar (Universidade Federal de Mi
 nas Gerais\, Brazil)\n\nMy works mainly address systems in which the elect
 ronic interaction is strong\, giving rise to emergent properties. In my ta
 lk\, I will start by discussing theoretical results we obtained in the co
 ntext of high-temperature superconductors\, such as copper oxides. For lar
 ge interactions\, as we dope the system\, it goes from a pseudo-gap phase 
 (where there is loss of spectral weight in regions of the momentum space)
  to a conventional Fermi metal\, concomitantly with a change in the Fermi
  surface from hole- to electron-like [Phys. Rev. Lett. 120\, 067002 (2018
 )]. Close to this transition\, the density-of-states at the Fermi level an
 d the B1g nematic susceptibility extracted from Raman response data show 
 an asymmetric\, discontinuous evolution as a function of doping [Braz. J.
  Phys. 56\, 48 (2026)].  If time allows it\, I will always present our wo
 rks on out-of-equilibrium dynamics generated by a quantum quench: the syst
 em is prepared in an initial state\, and we then vary one parameter of th
 e model describing it\, letting it evolve in time according to the model. 
 We observed and studied in this context a sudden coupling of a magnetic i
 mpurity to interacting chains and showed that the electronic interactions 
 in the chains favor the formation of the Kondo effect [Phys. Rev. B 103\, 
 125152 (2021)\; Phys. Rev. B 107\, 075110 (2023)]. More recently\, we hav
 e also observed that the impurity magnetization decays faster when one of
  the chains is replaced by a topological superconductor that hosts a Major
 ana fermion.\n\nhttps://indico.math.cnrs.fr/event/16135/
LOCATION:Salle 1180\, bâtiment E2 (Salle des séminaires )
URL:https://indico.math.cnrs.fr/event/16135/
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