Optical properties of Ca in the range 2.1-11.5 eV
- 1 September 1975
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 5 (9) , L159-L161
- https://doi.org/10.1088/0305-4608/5/9/006
Abstract
The optical reflectance of Ca in the range 2.1-11.5 eV has been measured. The optical conductivity was obtained from the measurements via a Kramers-Kronig analysis. The optical conductivity in the approximation of constant matrix element and optical surfaces were calculated using a band-structure calculation of Nilsson et al (1973). Fair agreement between the measured and calculated optical conductivity was obtained, thus confirming the alpha = 2/3 exchange parameter used in the band-structure calculation. The optical surfaces in a direct transition model show that the excitations are extended over large parts of the Brillouin zone.Keywords
This publication has 6 references indexed in Scilit:
- Electronic structure and optical properties of metallic calciumPhysical Review B, 1974
- The Self-Consistent Band Calculation of Ca and Sr under High PressureJournal of the Physics Society Japan, 1973
- Measurements and calculations of photoemission from CaSolid State Communications, 1973
- Electronic Structure of Calcium as a Function of the Lattice ConstantPhysical Review B, 1973
- The band structure and Fermi surface of calciumJournal of Physics F: Metal Physics, 1971
- Self-consistent energy bands of calcium by the augmented plane wave methodJournal of Physics F: Metal Physics, 1971