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出典:『Wikipedia』 (2011/01/12 21:41 UTC 版)

英語による解説

引用

The Empty Lattice Approximation is a theoretical electronic band structure model in which the potential is defined not more precisely than periodic and weak. The Empty Lattice Approximation describes a number of properties of energy dispersion relations of non-interacting free electrons that move through a crystal lattice. The energy of the electrons in the "empty lattice" is the same as the energy of free electrons. The model is useful because it clearly illustrates a number of, the sometimes very complex, features of energy dispersion relations in solids which are fundamental to all electronic band structures.