Abstract
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.
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