Premium
Bond charge model for the transverse dynamic effective charge and the piezoelectric constant of zincblende‐type crystals
Author(s) -
Hübwer K.
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.2220680121
Subject(s) - piezoelectricity , transverse plane , charge (physics) , effective nuclear charge , displacement (psychology) , elementary charge , piezoelectric coefficient , constant (computer programming) , condensed matter physics , materials science , ion , physics , quantum mechanics , structural engineering , composite material , psychology , engineering , psychotherapist , electron , computer science , programming language
A bond charge model for the transverse dynamic effective charge and the piezoelectric constant of the zincblende structure is presented. It works with analytical pseudopotentials and leads to simple analytical results, which yield numerical agreement with experimental data. The transverse dynamic effective charge is obtained from ionic and electronic polarizations arising in an optic‐mode sublattice displacement. The piezoelectric constant is calculated regarding additionally the effects of a macroscopic strain in a deformable‐ion model. It consists of an internal‐displacement term and a charge redistribution term, the latter comes from the bond charge. Both are of the same order of magnitude but of opposite sign and confirm quantitatively Lawaetz' qualitative local‐field analysis of Martin's theory of the piezoelectric effect.