On the variation of energy gaps in semiconducting alloy systems |
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Authors: | KS Song |
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Institution: | Physics Department, University of Ottawa, Ottawa, Canada |
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Abstract: | The departure from linearity of energy gaps in a semiconducting alloy system is studied within the framework of virtual crystal approximation. Exact expressions for the slope of energy variation as function of composition x at the two ends x=0 andx=1 are derived. These can be evaluated theoretically with energy band calculation of the two pure materilas for a system. We discuss here several features of the slope. |
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