174 citations · 835 across the 42 of their papers we have counts for
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Temperature-dependent electronic structure and ferromagnetism in the d=oo Hubbard model studied by a modfied perturbation theory
T. Wegner, M. Potthoff, W. Nolting
The infinite-dimensional Hubbard model is studied by means of a modified perturbation theory. The approach reduces to the iterative perturbation theory for weak coupling. It is exa…
One-step model of photoemission for non-local potentials
M. Potthoff, J. Lachnitt, W. Nolting +1
The one-step model of valence-band photoemission and inverse photoemission from single-crystal surfaces is reformulated for generalized (non-local, complex and energy-dependent) po…
Weak-coupling approach to the semi-infinite Hubbard model: Non-locality of the self-energy
M. Potthoff, W. Nolting
The Hubbard model on a semi-infinite three-dimensional lattice is considered to investigate electron-correlation effects at single-crystal surfaces. The standard second-order pertu…
Ferromagnetism in the Hubbard model: Influence of the lattice structure
T. Herrmann, W. Nolting
By use of the spectral density approach the influence of the lattice structure on the possibility of ferromagnetism in the single band Hubbard model is investigated. The d=\infty h…
Interpolating self-energy of the infinite-dimensional Hubbard model: Modifying the iterative perturbation theory
M. Potthoff, T. Wegner, W. Nolting
We develop an analytical expression for the self-energy of the infinite-dimensional Hubbard model that is correct in a number of different limits. The approach represents a general…