Abstract
Valence electron and positron charge densities in SiC are obtained from wave functions derived in a model pseudopotential bandstructure calculation. It is observed that the positron density is maximum in the open interstices and is excluded not only from the ion cores but also, to a considerable degree, from the valence bonds. Electron-positron momentum densities are calculated for the (001-110) plane. The results are used to analyze the positron effect in large gap semiconductors.
| Original language | English |
|---|---|
| Pages (from-to) | 957-966 |
| Number of pages | 10 |
| Journal | International Journal of Modern Physics C |
| Volume | 13 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Sept 2002 |
Keywords
- Momentum density
- Positron annihilation
- Pseudopotential
- Wave function
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Mathematical Physics
- Physics and Astronomy(all)
- Computer Science Applications
- Computational Theory and Mathematics