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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:3
UID:UW-Physics-Event-9501
DTSTART:20260313T160000Z
DTEND:20260313T170000Z
DTSTAMP:20260413T083908Z
LAST-MODIFIED:20260211T165253Z
LOCATION:5310 Chamberlin Hall
SUMMARY:The whole is greater than the sum of its parts – a multimeth
 od\, multimessenger perspective on the quantum many-body problem\, Con
 densed Matter Theory Group Seminar\, Thomas Schaefer\, University of T
 rieste
DESCRIPTION:Quantum materials in which electrons strongly interact wit
 h each other exhibit fascinating examples of contemporary condensed ma
 tter physics. Thrilling instances include the celebrated cuprates\, or
 ganic charge-transfer salts\, heavy fermion compounds\, moiré transit
 ion metal dichalcogenides\, and ultracold atomic gases. Their phase di
 agrams are extremely rich\, hosting intriguing phenomena like unconven
 tional superconductivity\, quantum criticality\, and quantum magnetism
 . Furthermore\, from a more practical point of view\, they carry the p
 otential for many functional applications like ultrafast switching and
  spintronics. At the same time\, due to their strongly interacting con
 stituents\, they pose a huge challenge to current quantum many-body th
 eory.
\n
\nIn my talk I will argue that a certain perspective on stron
 gly correlated systems\, which we coined multimethod\, multimessenger 
 approach\, can be a very powerful and versatile tool for the descripti
 on and understanding of these systems. I will first illustrate the pow
 er of the approach with two studies of the most fundamental model for 
 electronic correlations\, the Hubbard model\, on the square [1] and tr
 iangular [2] lattice. Second\, I will demonstrate how these model stud
 ies paved the way for advancing our understanding of magnetism in infi
 nite-layer nickelates [3] and moiré transition metal dichalcogenides 
 [4]\, as well as the unconventional superconducting properties in orga
 nic charge-transfer salts [5]. Given their broadness in applications\,
  these examples may serve as blueprints for future studies of strongly
  correlated systems.
\n
\n[1] T. Schäfer\, et al.\, Phys. Rev. X 11\,
  011058 (2021).
\n[2] A. Wietek\, R. Rossi\, F. Šimkovic IV\, M. Klet
 t\, P. Hansmann\, M. Ferrero\, E. M. Stoudenmire\, T. Schäfer\, and A
 . Georges\, Phys. Rev. X 11\, 041013 (2021).
\n[3] R. A. Ortiz\, P. Pu
 phal\, M. Klett\, F. Hotz\, R. K. Kremer\, H. Trepka\, M. Hemmida\, H.
 -A. Krug von Nidda\, M. Isobe\, R. Khasanov\, H. Luetkens\, P. Hansman
 n\, B. Keimer\, T. Schäfer\, M. Hepting\, Phys. Rev. Research 4\, 023
 093 (2022).
\n[4] P. Tscheppe\, J. Zang\, M. Klett\, S. Karakuzu\, A. 
 Celarier\, Z. Cheng\, T. A. Maier\, M. Ferrero\, A. J. Millis\, and T.
  Schäfer\, PNAS 121\, 3 (2024).
\n[5] H. Menke\, M. Klett\, K. Kanoda
 \, A. Georges\, M. Ferrero\, and T. Schäfer\, Phys. Rev. Lett. 133\, 
 136501 (2024).
URL:https://www.physics.wisc.edu/events/?id=9501
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