Positron Affinities and Deformation Potentials in Cubic Semiconductors

• Authors: B. Panda , G. Brauer
• Languages of publication: EN

Abstracts

EN

Positron affinities and deformation potentials are calculated in cubic bulk semiconductors using the density functional theory with the electron and positron energies in the local density approximation and generalized gradient approximation, respectively. In order to estimate these quantities, two different forms of the electron-positron correlation potential are used. Positron affinities calculated using these two correlation potentials differ by about 0.3 eV. Our calculated affinities in 3C-SiC are in better agreement with experiments than those obtained previously by another first principles method. In the present work the positron affinity in BN is found to be quite close to the one in diamond.

Keywords

EN

79.20.Mb; 73.30.+y

Discipline

• 79.20.Mb: Positron emission(for positron emission tomography, see 87.57.uk)
• 73.30.+y: Surface double layers, Schottky barriers, and work functions(see also 82.45.Mp Thin layers, films, monolayers, membranes in electrochemistry; see also 87.16.D- Membranes, bilayers, and vesicles in biological physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1999
• Volume: 95
• Issue: 4
• Pages: 641-646

Dates

published

1999-04

Contributors

author

B. Panda

• Institut für Ionenstrahlphysik und Materialforschung, Forschungszentrum Rossendorf, Postfach 510119, 01314 Dresden, Germany

author

G. Brauer

• Institut für Ionenstrahlphysik und Materialforschung, Forschungszentrum Rossendorf, Postfach 510119, 01314 Dresden, Germany

Identifiers

DOI

10.12693/APhysPolA.95.641