Year: 1972
Type: article
Abstract: The frequency- and wave-vector-dependent complex dielectric function $\ensuremath{\epsilon}(\stackrel{\ensuremath{\rightarrow}}{\mathrm{q}},\ensuremath{\omega})$ is calculated for silicon. The energy eigenvalues and eigenvectors which are used have been obtained from energy-band calculations based on the empirical pseudopotential method. Explicit results are given in the [100] direction in the range $0\ensuremath{\le}q\ensuremath{\le}(\frac{2\ensuremath{\pi}}{a})$ and $0\ensuremath{\le}\ensuremath{\hbar}\ensuremath{\omega}\ensuremath{\le}24$ eV. A comparison is made between the present results and the results of a calculation of $\ensuremath{\epsilon}(q,\ensuremath{\omega})$ for a free-electron gas in the random-phase approximation.
Source: Physical review. B, Solid state
Authors: John P. Walter, Marvin L. Cohen
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2063764010