Positron annihilation in boron nitride
Electron and positron charge densities are calculated as a function of position in the unit cell for boron nitride. Wave functions are derived from pseudopotential band structure calculations and the independent particle approximation (IPM), respectively, for electrons and positrons. It is observe...
Збережено в:
| Дата: | 2006 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2006
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/121452 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Positron annihilation in boron nitride / N. Amrane // Condensed Matter Physics. — 2006. — Т. 9, № 4(48). — С. 763–772. — Бібліогр.: 42 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Electron and positron charge densities are calculated as a function of position in the unit cell for boron nitride.
Wave functions are derived from pseudopotential band structure calculations and the independent particle
approximation (IPM), respectively, for electrons and positrons. It is observed that the positron density is maximum
in the open interstices and is excluded not only from ion cores but also to a considerable degree from
valence bonds. Electron-positron momentum densities are calculated for (001,110) planes. The results are
used in order to analyse the positron effects in BN. |
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