Resumo

SANTIAGO-PEREZ, D.G.; DE LEON-PEREZ, F.  e  PEREZ-ALVAREZ, R.. Force constants and dispersion relations for the zincblende and diamond structures revisited. Rev. mex. fis. [online]. 2006, vol.52, n.2, pp.163-171. ISSN 0035-001X.

The bulk atomic equations of motion are revisited in order to show explicitly, for high symmetry directions, the transformation of this three-dimensional problem into decoupled one-dimensional problems. The force constants of the corresponding one-dimensional equations are related to a larger number of force constants of the bulk problem. We illustrate how the three-dimensional force constants (and consequently the whole dynamical matrix) can be estimated from a few either experimental or theoretical points for semiconductors in the zincblende and diamond structures.

Palavras-chave : Force constants; zincblende; diamond.

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