339 citations · 366 across the 5 of their papers we have counts for
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Method for Calculating Excited Electronic States Using Density Functionals and Direct Orbital Optimization with Real Space Grid or Plane Wave Basis Set
Aleksei V. Ivanov, Gianluca Levi, Elvar Ö. Jónsson +1
A direct orbital optimization method is presented for density functional calculations of excited electronic states using either a real space grid or a plane wave basis set. The met…
Direct Energy Minimization Based on Exponential Transformation in Density Functional Calculations of Finite and Extended Systems
Aleksei V. Ivanov, Elvar Ö. Jónsson, Tejs Vegge +1
The energy minimization involved in density functional calculations of electronic systems can be carried out using an exponential transformation that preserves the orthonormality o…
Transferable Potential Function for Flexible HO Molecules Based on the Single Center Multipole Expansion
Elvar Örn Jónsson, Soroush Rasti, Marta Galynska +2
A potential function is presented for describing a system of flexible HO molecules based on the single center multipole expansion (SCME) of the electrostatic interaction. The m…