Electron and Positron Densities and the Temperature Dependence of the Positron Lifetime in a Vacancy in Aluminum
- 7 November 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 39 (19) , 1212-1215
- https://doi.org/10.1103/physrevlett.39.1212
Abstract
The results of an augmented-plane-wave calculation of the electron and positron density distributions in a vacancy in A1 are reported. The environment of the vacancy was simulated by a super cell with a volume 27 times that of the primitive unit cell. These results show that jellium-model calculations overestimate the electron density in a vacancy. The variation of the positron lifetime associated with thermal expansion of the lattice is also presented.Keywords
This publication has 11 references indexed in Scilit:
- Positron annihilation in small metal voidsSolid State Communications, 1977
- Electrons around a vacancy in simple metalsJournal of Physics F: Metal Physics, 1977
- Electronic Momentum Densities by Two-Dimensional Angular Correlation of Annihilation Radiation in AluminumPhysical Review Letters, 1976
- Vacancy formation energies and linear screening theoryJournal of Physics F: Metal Physics, 1976
- Electrons and positrons in metal vacanciesPhysical Review B, 1975
- Charge density and positron annihilation at lattice defects in aluminiumJournal of Physics F: Metal Physics, 1973
- Positron studies of condensed matterAdvances in Physics, 1973
- Metal hydrides-structure and band structureInternational Journal of Quantum Chemistry, 1971
- Trapping of Positrons at Vacancies in MetalsPhysical Review Letters, 1970
- Vacancies in close-packed polyvalent metalsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1970