336 citations · 2.1k across the 77 of their papers we have counts for
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cond-mat.str-el2003★ 171 cited
Self-energy-functional approach: Analytical results and the Mott-Hubbard transition
M. Potthoff
The self-energy-functional approach proposed recently is applied to the single-band Hubbard model at half-filling to study the Mott-Hubbard metal-insulator transition within the mo…
cond-mat.str-el2003★ 36 cited
Correlation and surface effects in Vanadium Oxides
S. Schwieger, M. Potthoff, W. Nolting
Recent photoemission experiments have shown strong surface modifications in the spectra from vanadium oxides as (V,Cr)_2O_3 or (Sr,Ca)VO_3. The effective mass is enhanced at the su…
cond-mat.str-el2003★ 336 cited
Self-energy-functional approach to systems of correlated electrons
Michael Potthoff
The grand potential of a system of interacting electrons is considered as a stationary point of a self-energy functional. It is shown that a rigorous evaluation of the functional i…