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cond-mat.str-el2000
Theory of Strongly Correlated Electron Systems. III. Including Correlation Effects into Electronic Structure Calculations
U. Lundin, I. Sandalov, O. Eriksson
In previous papers we showed that a division of the f-shell into two subsystems gives a better understanding of cohesive properties as well the general behavior of lanthanide syste…
cond-mat.str-el2000
Theory of Strongly Correlated Electron Systems. II.Intersite Coulomb Interaction and the Approximation of Renormalized Fermions in Total Energy Calculations
I. Sandalov, U. Lundin, O. Eriksson
The strong-coupling perturbation theory (SCPT) for correlated electron systems is extended to the case of full Coulomb interaction. The Coulomb mechanism of the orbital polarizatio…
cond-mat.str-el2000
Theory of strongly correlated f and d-electron systems. I. Exact Hamiltonian, Hubbard-Anderson models and perturbation theory near atomic limit within non-orthogonal basis set
Igor Sandalov, Borje Johansson, Olle Eriksson
The theory of correlated electron systems is formulated in a form which allows to use as a reference point an ab initio band structure theory (AIBST). The theory is constructed in…