ELECTRON-POSITRON MOMENTUM DENSITY IN INASXSB1-X

Authors
BOUARISSA N AOURAG H
Citation
N. Bouarissa et H. Aourag, ELECTRON-POSITRON MOMENTUM DENSITY IN INASXSB1-X, Philosophical magazine. B. Physics of condensed matter. Statistical mechanics, electronic, optical and magnetic, 75(3), 1997, pp. 325-334
Citations number
31
Categorie Soggetti
Physics, Applied",Mechanics,"Physics, Condensed Matter","Material Science
Journal title
Philosophical magazine. B. Physics of condensed matter. Statistical mechanics, electronic, optical and magnetic → ACNP
ISSN journal
13642812
Volume
75
Issue
3
Year of publication
1997
Pages
325 - 334
Database
ISI
SICI code
1364-2812(1997)75:3<325:EMDII>2.0.ZU;2-F
Abstract
Positron annihilation calculations have been performed on semiconducto r alloys with the aim of studying the disorder effect on the electron momentum distribution in InAsxSb1-x. The electron wavefunctions are ca lculated using the pseudopotential method within the virtual-crystal a pproximation with and without incorporating the disorder effect as an effective potential. The calculations of the positron wavefunctions ha ve been made in an identical manner, employing the point-core approxim ation for the ionic potential. The shapes of the profiles indicate tha t the angular correlation of positron annihilation radiation along dif ferent crystallographic directions in InAsxSb1-x is not sensitive to t he disorder effect.