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Positron Annihilation Studies in CuCl
Author(s) -
Aourag H.,
Certier M.
Publication year - 1997
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 - 10.1002/1521-3951(199708)202:2<951::aid-pssb951>3.0.co;2-g
Subject(s) - pseudopotential , positron annihilation , positron , semiconductor , momentum (technical analysis) , copper , electron , annihilation , particle (ecology) , atomic physics , materials science , condensed matter physics , physics , chemistry , nuclear physics , metallurgy , optoelectronics , geology , oceanography , finance , economics
Electron–positron momentum densities in CuCl are calculated along two different crystallographic directions 〈001〉 and 〈110〉 with the use of the empirical pseudopotential method (EPM) coupled with the independent particle method (IPM). The results exhibit features that are completely different from those observed in other III–V semiconductors. The dip and valley observed in III–V compounds are replaced by peaks. These differences are attributed to the very shallow “d” states in copper.