Anisotropy in the reflectivity and band structure of monoclinic selenium
- 1 February 1982
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 45 (2) , 227-239
- https://doi.org/10.1080/13642818208246329
Abstract
The molecular crystal α-monoclinic selenium has been found to be inadequately described by previous calculations of molecular eigenvalues. A simple band model for monoclinic selenium is proposed on the basis of a new determination of the eigenvalues for the Se8 ring molecule and consideration of the intermolecular interactions arising from the symmetry of the crystal structure. The model is supported by near-normal incidence polarization-dependent reflectivity measurements at room temperature and 77 K over the energy range 1.5–4.5 eV. This interpretation is further supported by a Lorentzian analysis of the data.Keywords
This publication has 16 references indexed in Scilit:
- Theory of Pressure Dependence of the Density of States and Reflectivity of SeleniumPhysical Review Letters, 1977
- X-Ray crystal structure of a new red, monoclinic form of cyclo-octaselenium, Se8Journal of the Chemical Society, Chemical Communications, 1977
- Polarization-dependent optical properties of orthorhombic sulfur in the ultravioletPhysical Review B, 1976
- Electronic structures of layer and chain elements by a local orbital methodPhilosophical Magazine, 1975
- Electronic structures of andPhysical Review B, 1975
- Optical anisotropy in layer compoundsJournal of Physics C: Solid State Physics, 1973
- Optical properties of monoclinic seleniumSolid State Communications, 1972
- A comparison of the electronic structure and properties of orthorhombic sulphur and monoclinic seleniumJournal of Physics and Chemistry of Solids, 1972
- Optical Properties of Amorphous Selenium in the Vacuum UltravioletJournal of the Optical Society of America, 1968
- The crystal and molecular structure of orthorhombic sulfurActa Crystallographica, 1955