A number of physical phenomena in crystals are determined by their electron energy spectrum. Some phenomena are associated with the motion of electrons in the periodic field of the lattice and with their scattering on lattice vibrations. The optical, electrical, magnetic, galvanomagnetic, and other properties of crystals of dielectrics, semiconductors, and metals are intimately connected with the nature of the electron energy spectrum and the geometry of the isoenergetic surfaces of the electrons in the crystal, the peculiarities of vibrations of the lattice atoms, and the dispersion of the frequencies of these vibrations. This chapter discusses the energy spectrum of the electrons in a crystal.
KeywordsAnisotropy Lithium Germanium Cond Seco
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