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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 35 (1985), S. 1346-1354 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Keating model used for the description of the covalent contributions of the crystal bonds in chalcopyrites is extended taking into account the geometrical differences between the chalcopyrite and sphalerite lattices expressed usually by τ = 2 − c0/a0 andx. The resulting matrix elements are given. The results are compared with those of an undistorted lattice by means of the calculation of phonon frequencies.
    Type of Medium: Electronic Resource
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