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DTSTAMP:20260424T040532Z
UID:65b108888958c108895765@ist.ac.at
DTSTART:20250304T110000
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DESCRIPTION:Speaker: Thomas Schaefer\nhosted by Maksym Serbyn\nAbstract: Qu
 antum materials in which electrons strongly interact with each other exhib
 it fascinating examples of contemporary condensed matter physics. Thrillin
 g instances include the celebrated cuprates\, organic charge-transfer salt
 s\, heavy fermion compounds\, moir transition metal dichalcogenides\, and 
 ultracold atomic gases. Their phase diagrams are extremely rich\, hosting 
 intriguing phenomena like unconventional superconductivity\, quantum criti
 cality\, and quantum magnetism. Due to their strongly interacting constitu
 ents they pose a huge challenge to current quantum many-body theory.In my 
 talk I will argue that a certain perspective on strongly correlated system
 s\, which we coined multimethod\, multimessenger approach\, can be a very 
 powerful and versatile tool for the description and understanding of these
  systems. I will first illustrate the power of the approach with two studi
 es of the most fundamental model for electronic correlations\, the Hubbard
  model [1]\, on the square [2] and triangular [3] lattice. Second\, I will
  demonstrate how these model studies paved the way for advancing our under
 standing of magnetism in infinite-layer nickelates [4] and moir transition
  metal dichalcogenides [5]\, as well as the unconventional superconducting
  properties in organic charge-transfer salts [6]. Given their broadness in
  applications\, these examples may serve as blueprints for future studies 
 of strongly correlated systems.[1] M. Qin\, T. Schfer\, S. Andergassen\, P
 . Corboz\, E. Gull\, Ann. Rev. Con. Mat. Phys. 13\, 275 (2022).[2] T. Schf
 er et al.\, Phys. Rev. X 11\, 011058 (2021).[3] A. Wietek\, R. Rossi\, F. 
 imkovic IV\, M. Klett\, P. Hansmann\, M. Ferrero\, E. M. Stoudenmire\, T. 
 Schfer\, and A. Georges\, Phys. Rev. X 11\, 041013 (2021).[4] R. A. Ortiz\
 , P. Puphal\, M. Klett\, F. Hotz\, R. K. Kremer\, H. Trepka\, M. Hemmida\,
  H.-A. Krug von Nidda\, M. Isobe\, R. Khasanov\, H. Luetkens\, P. Hansmann
 \, B. Keimer\, T. Schfer\, M. Hepting\, Phys. Rev. Research 4\, 023093 (20
 22).[5] P. Tscheppe\, J. Zang\, M. Klett\, S. Karakuzu\, A. Celarier\, Z. 
 Cheng\, T. A. Maier\, M. Ferrero\, A. J. Millis\, and T. Schfer\, PNAS 121
 \, 3 (2024).[6] H. Menke\, M. Klett\, K. Kanoda\, A. Georges\, M. Ferrero\
 , and T. Schfer\, Phys. Rev. Lett. 133\, 136501 (2024).
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Thomas Schaefer: The whole is greater than the sum of its parts â
 €“  a multimethod\, multimessenger perspective on quantum materials
URL:https://talks-calendar.ista.ac.at/events/5459
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