334 citations · 1.4k across the 21 of their papers we have counts for
21 papers
First order Mott transition at zero temperature in two dimensions: Variational plaquette study
Matthias Balzer, Bumsoo Kyung, David Sénéchal +2
The nature of the metal-insulator Mott transition at zero temperature has been discussed for a number of years. Whether it occurs through a quantum critical point or through a firs…
Electronic structure of zinc-blende MnTe within the GW approximation
A. Fleszar, M. Potthoff, W. Hanke
Using the local spin-density approximation (LSDA) and the (non self-consistent) GW approach, the (quasi-particle) band structure is calculated for MnTe in zinc-blende geometry. Dif…
Phase separation in the particle-hole asymmetric Hubbard model
M. Eckstein, M. Kollar, M. Potthoff +1
The paramagnetic phase diagram of the Hubbard model with nearest-neighbor (NN) and next-nearest-neighbor (NNN) hopping on the Bethe lattice is computed at half-filling and in the w…
Variational cluster approach to the Hubbard model: Phase-separation tendency and finite-size effects
M. Aichhorn, E. Arrigoni, M. Potthoff +1
Using the variational cluster approach (VCA), we study the transition from the antiferromagnetic to the superconducting phase of the two-dimensional Hubbard model at zero temperatu…
Variational cluster approach to spontaneous symmetry breaking: The itinerant antiferromagnet in two dimensions
C. Dahnken, M. Aichhorn, W. Hanke +2
Based on the self-energy-functional approach proposed recently [M. Potthoff, Eur. Phys. J. B 32, 429 (2003)], we present an extension of the cluster-perturbation theory to systems…
Variational cluster approach to correlated electron systems in low dimensions
M. Potthoff, M. Aichhorn, C. Dahnken
A self-energy-functional approach is applied to construct cluster approximations for correlated lattice models. It turns out that the cluster-perturbation theory (Senechal et al, P…