Phys. Rev. B 43, 13892–13898 (1991)First-principles calculation of positron lifetimes in solidsReceived 29 November 1990; published in the issue dated 15 June 1991 We present a first-principles approach for calculating the positron lifetime in metals. Convenient expressions are provided for the electron-positron correlation function and the enhancement factor. Calculations on a wide range of elemental metals and some monovacancies are found to be in excellent agreement with experiment. The approximations inherent in this approach and the treatment of the core-electron contribution are discussed. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.43.13892
DOI:
10.1103/PhysRevB.43.13892
PACS:
78.70.Bj, 71.60.+z
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