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Finite f-Electron Bandwidth in a Heavy Fermion Model
Axel Euverte, Simone Chiesa, Richard T. Scalettar +1
Determinant Quantum Monte Carlo (DQMC) is used to study the effect of non-zero hopping t_f in the localized f-band of the periodic Anderson model (PAM) in two dimensions. The low t…
Magnetic order in the repulsive Fermi-Hubbard model in three-dimensions and the crossover to two-dimensions
Jie Xu, Simone Chiesa, Eric J. Walter +1
Systems of fermions described by the three-dimensional (3D) repulsive Hubbard model on a cubic lattice have recently attracted considerable attention due to their possible experime…
Magnetic transition in a correlated band insulator
Axel Euverte, Simone Chiesa, Richard . T. Scalettar +1
The effect of on-site electron-electron repulsion in a band insulator is explored for a bilayer Hubbard Hamiltonian with opposite sign hopping in the two sheets. The ground sta…
Optimized Confinement of Fermions in Two Dimensions
J. D. Cone, S. Chiesa, V. R. Rousseau +2
One of the challenging features of studying model Hamiltonians with cold atoms in optical lattices is the presence of spatial inhomogeneities induced by the confining potential, wh…
Kondo screening and Magnetism at Interfaces
A. Euverte, F. Hébert, S. Chiesa +2
The nature of magnetic order and transport properties near surfaces is a topic of great current interest. Here we model metal-insulator interfaces with a multi-layer system governe…
Quantum Monte Carlo study of the two-dimensional fermion Hubbard Model
C. N. Varney, C. -R. Lee, Z. J. Bai +3
We report large scale determinant Quantum Monte Carlo calculations of the effective bandwidth, momentum distribution, and magnetic correlations of the square lattice fermion Hubbar…