Variational pseudo-self-interaction-corrected density functional approach to the ab initio description of correlated solids and molecules
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Citation:A. Filippetti, C. D. Pemmaraju, S. Sanvito, P. Delugas, D. Puggioni, and Vincenzo Fiorentini, Variational pseudo-self-interaction-corrected density functional approach to the ab initio description of correlated solids and molecules, Physical Review B, 84, 19, 2011, 195127
We present a variational pseudo self-interaction correction density functional approach (VPSIC) to the ab initio theoretical description of correlated solids and molecules. The approach generalizes previous nonvariational versions based on plane waves (pseudo self-interaction correction) or atomic orbital (atomic self-interaction correction). The VPSIC approach provides well-defined total energies and forces and enables structural optimization and dynamics, aside from providing high-quality electronic-structure-related properties as the previous methods. A variety of demanding test cases, including nonmagnetic and magnetic correlated oxides (e. g., manganites and d(1) titanates) and a large database of molecules, indicate a high accuracy of the method in predicting structural and electronic properties. This represents a considerable improvement over standard local density functionals at a similar computational cost.
Science Foundation Ireland
Keywords:Condensed matter physics
Series/Report no:Physical Review B