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Exchange and correlation in nearly free‐electron metals
Author(s) -
Brosens F.
Publication year - 1975
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220680224
Subject(s) - electron , basis (linear algebra) , physics , electronic correlation , correlation , statistical physics , condensed matter physics , quantum mechanics , mathematics , geometry
On the basis of the Hohenberg‐Kohn theorem, an effective exchange and correlation potential is derived for nearly free electron metals. Using the one particle approach, derived by Kohn and Sham, on variational grounds, an expansion of the total energy with respect to deviations from the uniform density allows for calculating the effective potential.