171 citations · 936 across the 25 of their papers we have counts for
25 papers
The 3-Band Hubbard-Model versus the 1-Band Model for the high-Tc Cuprates: Pairing Dynamics, Superconductivity and the Ground-State Phase Diagram
W. Hanke, M. L. Kiesel, M. Aichhorn +2
One central challenge in high- superconductivity (SC) is to derive a detailed understanding for the specific role of the - and - orbital degrees o…
Phase diagram and single-particle spectrum of CuO layers within a variational cluster approach to the 3-band Hubbard model
E. Arrigoni, M. Aichhorn, M. Daghofer +1
We carry out a detailed numerical study of the three-band Hubbard model in the underdoped region both in the hole- as well as in the electron-doped case by means of the variational…
Theory of two-particle excitations and the magnetic susceptibility in high-Tc cuprate superconductors
S. Brehm, E. Arrigoni, M. Aichhorn +1
Two-particle (2-p) excitations such as spin and charge excitations play a key role in high-Tc cuprate superconductors (HTSC). On the basis of a parameter-free theory, which extends…
The superconducting gap in the Hubbard model and the two gap energy scales in high-Tc cuprates
M. Aichhorn, E. Arrigoni, Z. B. Huang +1
Recent excperiments (ARPES, Raman) suggest the presence of two distinct energy gaps in high-Tc superconductors (HTSC), exhibiting different doping dependences. Results of a variati…
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…
Role of vertex corrections in the spin-fluctuation mediated pairing mechanism
Z. B. Huang, W. Hanke, E. Arrigoni
We study numerically and partly diagrammatically the renormalization of the electron-spin interaction or vertex in a two-dimensional one-band Hubbard model with spin-fluctuation mo…