Crystal dynamics of zinc chalcogenides III: an application to ZnTe

Authors

JAY PRAKASH DUBEY
RAJ KISHOR TIWARI
KRIPA SHANKAR UPADHYAYA
PRAMOD KUMAR PANDEY

DOI

10.3906/fiz-1509-18

Abstract

We report the results of a theoretical study on phonon dispersion curves (PDCs) along the three principal symmetry directions, Debye temperature variation, combined density of states (CDS) curves, two-phonon Raman/IR peaks, and anharmonic elastic properties (third order elastic constants and their pressure derivatives) of ZnTe. This new van der Waals three-body force rigid shell model (VTRSM) incorporates the effect of van der Waals interactions and three-body interactions into the rigid shell model of zinc blende structure, where the short range interactions are operative up to the second neighbors. Our results are in good agreement with the available measured data for zinc telluride. It is concluded that this VTRSM will be equally applicable to study the above properties of other zinc blende structure solids.

Keywords

Lattice dynamics, van der Waals interactions, Debye temperature variation, combined density of states curve, Raman spectra, zinc telluride

First Page

201

Last Page

208

Recommended Citation

DUBEY, JAY PRAKASH; TIWARI, RAJ KISHOR; UPADHYAYA, KRIPA SHANKAR; and PANDEY, PRAMOD KUMAR (2016) "Crystal dynamics of zinc chalcogenides III: an application to ZnTe," Turkish Journal of Physics: Vol. 40: No. 3, Article 2. https://doi.org/10.3906/fiz-1509-18
Available at: https://journals.tubitak.gov.tr/physics/vol40/iss3/2