| Autor: |
Thomas Frauenheim, Harald Overhof, E. Rauls, Uwe Gerstmann |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
Materials Science Forum. :501-506 |
| ISSN: |
1662-9752 |
| Popis: |
The conclusion which is drawn from the EPR line broadening and narrowing of the N shallow donor in an isotope enriched and non-enriched 4H-SiC and 6H-SiC crystals along with previous ENDOR results shows that the spin-density distribution over the C and Si nuclei differs between the 4H-SiC and 6H-SiC polytypes. The main part of the spin density in 4H-SiC is located on the Si sublattice. In contrast, in 6H-SiC the main part of the spin density is located on the C sublattice. An explanation for the difference in the electronic wave function of the N donor in 4HSiC and 6H-SiC can be found in the large difference in the band structure of two polytypes and in the position of the minima in the Brillouin zone. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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