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Electron–positron momentum densities in crystalline solids
Author(s) -
KontrymSznajd Grażyna,
Sormann Heinrich
Publication year - 2014
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.201350116
Subject(s) - positron , electron , position and momentum space , physics , momentum (technical analysis) , scattering , electron scattering , lattice (music) , electron density , wave function , bloch wave , atomic physics , condensed matter physics , quantum mechanics , finance , acoustics , economics
The uniqueness of information contained in electron densities ρ ( p ) in the extended momentum space is pointed out, showing that certain electronic properties can be derived only from ρ ( p ), directly related to the electron Bloch wave functions. The influence of many‐body effects on the electron–positron (e–p) momentum density and of the crystal lattice periodicity on scattering effects is discussed. On the example of Mg it is illustrated that for simple metals there is a unique opportunity to estimate, for e–p densities, electron–electron correlation effects quantitatively.