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Vibrational Spectrum of InSe
Author(s) -
Belenkii G. L.,
Alieva L. N.,
Nani R. Kh.,
Salaev E. Yu.
Publication year - 1977
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.2220820238
Subject(s) - brillouin zone , phonon , reflection (computer programming) , orientation (vector space) , range (aeronautics) , condensed matter physics , materials science , absorption (acoustics) , absorption edge , atmospheric temperature range , optics , molecular physics , chemistry , physics , band gap , geometry , mathematics , meteorology , computer science , composite material , programming language
Reflection and absorption of light by InSe single crystals are investigated in the range of wave numbers 500 to 100 cm ‐1 . The measurements are carried out at room temperature in E ⟂ C orientation of the electric vector. The linear chain model is used for calculating the phonon frequencies at k = 0. The phonon energies at the edge of the Brillouin zone (M point) are calculated by means of the force constants model including the atoms of a single layer.