Regensburg 2025 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 3: Correlated Magnetism – General
TT 3.1: Vortrag
Montag, 17. März 2025, 09:30–09:45, H32
The zoo of states in the 2D Hubbard model — •Robin Scholle1, Pietro Bonetti1,2, Demetrio Vilardi1, and Walter Metzner1 — 1Max Planck Institute for Solid State Research, Stuttgart, Germany — 2Harvard University, Cambridge, USA
We use real-space Hartree-Fock theory to construct a magnetic phase diagram of the two-dimensional Hubbard model as a function of temperature and doping. We are able to detect various spin- and charge order patterns including Néel, stripe and spiral order without biasing the system towards one of them. For an intermediate interaction strength we predominatly find Néel order close to half-filling, stripe order for low temperatures or large doping, and an intermediate region of spiral order.
I will give a short summary of the method followed by a presentation of our current results and an outlook for possible further applications.
Keywords: Hubbard; Hartree-Fock; Stripe; Spin order; Magnetism