Premium
Potential Based Phonon Dispersion in Thallium
Author(s) -
Saxena K. C.,
Rathore R. P. S.
Publication year - 1994
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.2221820206
Subject(s) - thallium , dispersion (optics) , phonon , ion , dielectric , exponential function , dispersion relation , electron , condensed matter physics , chemistry , binding energy , materials science , chemical physics , molecular physics , atomic physics , physics , inorganic chemistry , quantum mechanics , optoelectronics , mathematics , organic chemistry , mathematical analysis
A realistic theoretical study to predict the phonon dispersion and binding energy of h.c.p. metals is developed. The total interaction among the constituents is divided into two parts, ion‐ion part and electron‐ion‐electron part. The former part is expressed by the modified form of the generalized exponential potential (MGEP) developed by the present group. To highlight the characteristic features of the MGEP other similar potentials are compared. The latter part is represented by the modified Krebs scheme, involving the dielectric screening due to Vashista and Singhwi. These interactions are blended to develop a model for predicting the binding energy and the phonon dispersion of the scantily studied h.c.p. metals like thallium.