Calculation of positron states and annihilation in solids: A density-gradient-correction scheme
- 15 June 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 53 (24) , 16201-16213
- https://doi.org/10.1103/physrevb.53.16201
Abstract
The generalized gradient correction method for positron-electron correlation effects in solids [B. Barbiellini et al., Phys. Rev. B 51, 7341 (1995)] is applied in several test cases. The positron lifetime, energetics, and momentum distribution of the annihilating electron-positron pairs are considered. The comparison with experiments shows systematic improvement in the predictive power of the theory compared to the local-density approximation results for positron states and annihilation characteristics. © 1996 The American Physical Society.Keywords
This publication has 71 references indexed in Scilit:
- Theory of positrons in solids and on solid surfacesReviews of Modern Physics, 1994
- Positron-annihilation characteristics in an electron gas from low to high densitiesPhysical Review B, 1993
- Positron and electron energy levels in rare-gas solidsPhysical Review B, 1992
- Generalized gradient approximations for exchange and correlation: A look backward and forwardPhysica B: Condensed Matter, 1991
- Effects of gradient corrections on electronic structure in metalsJournal of Physics: Condensed Matter, 1990
- Ground-state properties of third-row elements with nonlocal density functionalsPhysical Review B, 1989
- The density functional formalism, its applications and prospectsReviews of Modern Physics, 1989
- Non-local positron-electron density functional theory and the positron surface stateJournal of Physics F: Metal Physics, 1988
- Interaction of positron beams with surfaces, thin films, and interfacesReviews of Modern Physics, 1988
- Electron-positron density-functional theoryPhysical Review B, 1986