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Dispersion laws in crystals with a simple tetragonal lattice. II

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Abstract

Using the method of charged corepresentations [1], we obtain parametric expansions of dispersion laws in wave vector components in the quadratic approximation, possible degeneracies, and vanishing slopes of energy surfaces close to symmetry points of the Brillouin zone of class C4h crystals with a simple tetragonal lattice.

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Literature cited

  1. 1.

    G. F. Karavaev, N. V. Kudryavtseva, and V. A. Chaldyshev, Fiz. Tverd. Tela,4, 3471 (1962)

  2. 2.

    B. F. Ormont, Structure of Inorganic Materials [in Russian], GITTL, Moscow (1950)

  3. 3.

    N. V. Kudryavtseva and L. V. Tikhonova, Fiz. Vyssh. Uchebn. Zaved., Fiz., No. 11, 93 (1971)

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 23–26, March, 1975.

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Kudryavtseva, N.V., Tikhonova, L.V. Dispersion laws in crystals with a simple tetragonal lattice. II. Soviet Physics Journal 18, 309–311 (1975). https://doi.org/10.1007/BF00889288

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Keywords

  • Energy Surface
  • Wave Vector
  • Brillouin Zone
  • Vector Component
  • Symmetry Point