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Magnetic and Thermodynamic Properties of the Three-Dimensional Periodic Anderson Hamiltonian
Carey Huscroft, A. K. McMahan, R. T. Scalettar
The three dimensional periodic Anderson model is studied with Quantum Monte Carlo. We find that the cross-over to the Kondo singlet regime is remarkably sharp at low temperatures,…
Quantum Monte Carlo Study of the Disordered Attractive Hubbard Model
R. T. Scalettar, N. Trivedi, C. Huscroft
We investigate the disorder-driven superconductor to insulator quantum phase transition (SIT) in an interacting fermion model using determinantal quantum Monte Carlo (QMC) methods.…
Ordered states in the disordered Hubbard model
P. J. H. Denteneer, M. Ulmke, R. T. Scalettar +1
The Hubbard model is studied in which disorder is introduced by putting the on-site interaction to zero on a fraction f of (impurity) sites of a square lattice. Using Quantum Monte…
Volume-Collapse Transitions in the Rare Earth Metals
A. K. McMahan, C. Huscroft, R. T. Scalettar +1
We describe current experimental and theoretical understanding of the pressure-induced volume collapse transitions occurring in the early trivalent rare earth metals. General featu…
Evolution of the Density of States Gap in a Disordered Superconductor
Carey Huscroft, Richard T. Scalettar
It has only recently been possible to study the superconducting state in the attractive Hubbard Hamiltonian via a direct observation of the formation of a gap in the density of sta…
Disorder and Impurities in Hubbard-Antiferromagnets
M. Ulmke, P. J. H. Denteneer, V. Janis +4
We study the influence of disorder and randomly distributed impurities on the properties of correlated antiferromagnets. To this end the Hubbard model with (i) random potentials, (…