Five papers present derivations in effective-mass theory for semiconducing materials of gradually varying spatial composition. In paper entitled "Position-Dependent Effective Masses in Semiconductor Theory," concept of spatially-varying effective masses reviewed and shown unworkable. Second paper considers compound semiconductor having gradual spatial variation of composition. Third paper shows effective masses depend on average of chemical composition over entire crystal. Pair of papers entitled "Forces Acting on Free Carriers in Semiconductors of Inhomogeneous Composition" show it is incorrect to apply extended Wannier-Slater theorem using spatially changing effective masses, and quasi-electric fields due to spatial variations in chemical composition do not depend explicitly on temperature.
Effective-Mass Theory For Inhomogeneous Semiconductors
NASA Tech Briefs ; 12 , 4
1988-04-01
Miscellaneous
No indication
English
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|Kinetic Theory of Inhomogeneous Systems
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|The Effective Permittivity of Strongly Fluctuating Statistically Inhomogeneous Media
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