A. Filippetti, C. D. Pemmaraju, P. Delugas, D. Puggioni, V. Fiorentini, S. Sanvito, A variational pseudo-self-interaction correction approach: ab-initio description of correlated oxides and molecules, 2011
We present a fully variational generalization of the pseudo self-interaction correction (VPSIC) approach previously presented in two implementations based on plane-waves and atomic orbital basis set, known as PSIC and ASIC, respectively. The new method is essentially equivalent to the previous version for what concern the electronic properties, but it can be exploited to calculate total-energy derived properties as well, such as forces and structural optimization. We apply the method to a variety of test cases including both non-magnetic and magnetic correlated oxides and molecules, showing a generally good accuracy in the description of both structural and electronic properties.
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