Electrical resistivity of the Ti\mathsf{_4}O\mathsf{_7} Magneli phase under high pressure |
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| Authors: | C Acha M Monteverde M Núñez-Regueiro A Kuhn M A Alario Franco |
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| Institution: | (1) Physics Department, University of M'sila, 28000 M'sila, Algeria, DZ |
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| Abstract: | The electronic and positronic properties of the pentanary semiconductor alloys GaxIn1-xPySbzAs1-y-z lattice matched to GaSb have been studied. The electron wave function is calculated semiempirically using the pseudopotential
band model under the virtual crystal approximation. The positron wave function is evaluated under the point core approximation
for the ionic potential. Electronic and positronic quantities namely, electronic structure and band gaps, positron band structure,
effective mass and affinity, and electron-positron momentum densities have been predicted and their dependence on the phosphorus
composition has been discussed.
Received 30 August 2002 / Received in final form 12 February 2003 Published online 24 April 2003 |
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| Keywords: | PACS 71 20 -b Electron density of states and band structure of crystalline solids – 71 60 +z Positron states – 78 70 Bj Positron annihilation |
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