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Reflectivity Spectra and Band Structure of the Zinc and Cadmium Diphosphides
Author(s) -
Sobolev V. V.,
Kozlov A. I.,
Polygalov Yu. I.,
Tupitsyn V. E.,
Poplavnoi A. S.
Publication year - 1989
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.2221540139
Subject(s) - tetragonal crystal system , reflectivity , monoclinic crystal system , spectral line , pseudopotential , zinc , electronic band structure , crystallography , chemistry , exciton , materials science , optics , crystal structure , condensed matter physics , physics , organic chemistry , astronomy
Precision reflectivity spectra of the tetragonal ZnP 2 , CdP 2 for E ∥ c , E ⟂ c and monoclinic ZnP 2 for E ∥ a , E ∥ b , E ∥ c are investigated at 80 and 293 K. New reflectivity structures are observed including the exciton peaks in the monoclinnic ZnP 2 . The thermoreflectivity spectra of CdP 2 are obtained at 193 K. The band structure of the tetragonal ZnP 2 and CdP 2 and CdP 2 is calculated using the pseudopotential method at the symmetrical points T, Z, A, M, R. A comparison of the reflectivity data with the results of the ZnP 2 band structure is made.