Semiconductor Physics, Quantum Electronics & Optoelectronics. 2005. V. 8, N 1. P. 019-024.
https://doi.org/10.15407/spqeo8.01.019

Application of the method of projective representations to the analysis of exciton-phonon transitions in enantiomorphous tetragonal crystals ZnP2 and CdP2
S.V. Koryakov, V.O. Gubanov, M.M. Biliy, O.V. Slobodyanyuk, Z.Z. Yanchuk

Taras Shevchenko Kyiv National University, Department of Physics 2, prospect Academician Glushkov, 03022 Kyiv, Ukraine Phone: +38 (067) 465-64-18
E-mail: sergiy_koryakov@univ.kiev.ua

Abstract. The projective representations of the wavevector group were applied to the analysis of exciton-phonon transitions in enantiomorphous tetragonal crystals ZnP2 and CdP2. Selection rules for indirect transitions were derived. Using pk rr -method, the different points in the Brillouin zone were examined to identify zero slopes and extremums of the dispersion curves kE )( r . Photoluminescence and edge absorption polarized spectra were interpreted taking into account the results of above theoretical analysis.

Keywords: projective representations, exciton-phonon transitions, α-ZnP2, CdP2.

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