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- W1969116885 abstract "Abstract The effect of alloying on positrons in Si1 −xGex is reported. Our computations are based on the independent particle model combined with the empirical pseudopotential method. To make an allowance for the chemical disorder, the virtual crystal approximation is used, including a correction to the alloy potential. The evolution of the positron thermalization energy versus mole fraction shows that the positrons diffuse better over the range 0.15 x .0. Our calculated positron effective band masses for Si and Ge are in good agreement with the available experimental and theoretical ones, and vary non-linearly from Si to Ge. The positron distribution difference between different compositions indicates that the positron has an affinity for one sort of atom in Si1 xGex. It was noted that the positron is not sensitive to the disorder effect. Based on these results, this study could stimulate further work on the alloying effect on positron annihilation in semiconductor alloys." @default.
- W1969116885 created "2016-06-24" @default.
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- W1969116885 date "1998-05-01" @default.
- W1969116885 modified "2023-09-27" @default.
- W1969116885 title "Materials Science Communication The alloying effect on positron states in Si1xGex" @default.
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- W1969116885 doi "https://doi.org/10.1016/s0254-0584(97)02060-9" @default.
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