Premium
Lundqvist Three‐Body Interaction and Lattice Dynamics of Ionic Crystals
Author(s) -
Sarkar S. K.,
Sengupta S.
Publication year - 1978
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.2220870215
Subject(s) - ion , lattice (music) , ionic bonding , interpretation (philosophy) , ionic crystal , shell model , statistical physics , dispersion (optics) , crystal structure , physics , materials science , chemistry , crystallography , atomic physics , computer science , optics , quantum mechanics , acoustics , programming language
The Lundqvist three‐body interaction which was originally deduced for rigid ions is rederived in the framework of a shell model. Some discrepancies in a previous interpretation are pointed out. Application is considered for NaCl crystal. If the parameter of the three‐body interaction is determined from the overlap integrals it is found that the calculated dispersion curves, in general, deviate more from the experimental ones. Some static properties are also calculated.