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- W2110184042 abstract "Without our ability to model and manipulate the band structure of semiconducting materials, the modern digital computer would be impractically large, hot, and expensive. In the undergraduate QM curriculum, we studied the effect of spatially periodic potentials on the spectrum of a charged particle in one dimension. We would like to understand how to extend these methods to model actual crystalline materials. Along the way, we will explore the construction of periodic potentials in three dimensions, and we use this framework to relate the single-particle Hamiltonian to the potential contribution from each atom. We then construct a crude model system analogous to the semiconductor silicon, and demonstrate the appearance of level splitting and band gaps as the strength of the potential is varied, in accordance with our intuition from the one-dimensional case. We discuss refinements of the model to include many-particle effects, and finally we show how a careful choice of the potential function leads to good agreement with the correct band diagram for silicon." @default.
- W2110184042 created "2016-06-24" @default.
- W2110184042 creator A5006623868 @default.
- W2110184042 date "2011-05-01" @default.
- W2110184042 modified "2023-09-27" @default.
- W2110184042 title "A Brief Introduction to Band Structure in Three Dimensions" @default.
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- W2110184042 hasPublicationYear "2011" @default.
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