38 citations · 65 across the 3 of their papers we have counts for
3 papers
cond-mat.str-el2008★ 27 cited
Local correlation functional for electrons in two dimensions
S. Pittalis, E. Rasanen, M. Marques
We derive a local approximation for the correlation energy in two-dimensional electronic systems. In the derivation we follow the scheme originally developed by Colle and Salvetti…
cond-mat.str-el2007★ 38 cited
Exchange-energy functionals for finite two-dimensional systems
S. Pittalis, E. Rasanen, N. Helbig +1
Implicit and explicit density functionals for the exchange energy in finite two-dimensional systems are developed following the approach of Becke and Roussel [Phys. Rev. A 39, 3761…
cond-mat.mtrl-sci2007
Orbital currents in the Colle-Salvetti correlation energy functional and the degeneracy problem
S. Pittalis, S. Kurth, S. Sharma +1
Popular density functionals for the exchange-correlation energy typically fail to reproduce the degeneracy of different ground states of open-shell atoms. As a remedy, functionals…