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Structural complexity of snapshots of 2D Fermi-Hubbard systems
Eduardo Ibarra-García-Padilla, Stephanie Striegel, Richard T. Scalettar +1
The development of quantum gas microscopy for two-dimensional optical lattices has provided an unparalleled tool to study the Fermi-Hubbard model (FHM) with ultracold atoms. Spin-r…
Attractive Su-Schrieffer-Heeger-Hubbard Model on a Square Lattice Away from Half-Filling
Bo Xing, Chunhan Feng, Richard Scalettar +2
The Su-Schrieffer-Heeger (SSH) model, with bond phonons modulating electron tunneling, is a paradigmatic electron-phonon model that hosts an antiferromagnetic order to bond order t…
Metal-insulator transition and quantum magnetism in the SU(3) Fermi-Hubbard Model: Disentangling Nesting and the Mott Transition
Chunhan Feng, Eduardo Ibarra-García-Padilla, Kaden R. A. Hazzard +3
We use state-of-the-art numerical techniques to compute ground state correlations in the two-dimensional SU(3) Fermi Hubbard model at -filling, modeling fermions with three po…
Enhancement of Charge Density Wave Correlations in a Holstein Model with an Anharmonic Phonon Potential
C. Kvande, C. Feng, F. Hébert +2
The Holstein Hamiltonian describes itinerant electrons whose site density couples to local phonon degrees of freedom. In the single site limit, at half-filling, the electron-phonon…
Magnetic and singlet phases in the three-dimensional periodic Anderson Model
Wiliam S. Oliveira, Thereza Paiva, Richard T. Scalettar +1
Heavy fermion materials are compounds in which localized -orbitals hybridize with delocalized ones, leading to quasiparticles with large renormalized masses. The presence of…