Optical Phonons and Crystalline Symmetry of InSe
Authors:
- S. JandlSJS. Jandl
- 1 January 1981
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 103 (1) , 123-130
Abstract
A survey of the Raman and infra red data for the layered structure InSe shows that there is no agreement upon its crystallographic structure. The polytypes, β, ε, and γ are equally invoked by the various groups. Some experiments on samples from different laboratories are repeated. Infrared transmission at different temperatures and Raman spectra away from resonance are obtained. It is concluded on the basis of the optical data that InSe crystallizes only in the β‐polytype. All previous optical measurements can be explained with the β‐polytype if one takes into account the resonance Raman effect. It is inferred from the Raman and infra red data that the interlayer interaction cannot be exclusively of the van der Waals type and that long range Coulomb forces contribute to the lattice dynamics of InSe.Keywords
This publication has 12 references indexed in Scilit:
- Directional dispersion of extraordinary phonons in layer compound InSeSolid State Communications, 1979
- Second order Raman spectrum and phase transition in InSeSolid State Communications, 1979
- Resonant Raman scattering at higher M0 exciton edge in layer compound InSeSolid State Communications, 1978
- Photovoltaic properties of some semiconducting layer structuresPhysica Status Solidi (a), 1978
- Infrared and Raman Spectra of Layer InSe Single CrystalsPhysica Status Solidi (b), 1978
- Raman spectrum of crystalline InSeSolid State Communications, 1978
- Raman scattering in some III‐VI layer single crystalsPhysica Status Solidi (b), 1978
- Vibrational Spectrum of InSePhysica Status Solidi (b), 1977
- Large InSe monocrystals grown from a non-stoichiometric meltJournal of Crystal Growth, 1977
- Interlayer Bonding and the Lattice Vibrations of-GaSePhysical Review B, 1972