Geodesic
Topological interaction of phonons with dislocations and disclinations. II. The scattering problem
Teoretičeskaâ i matematičeskaâ fizika, Tome 86 (1991) no. 1, pp. 81-97 Cet article a éte moissonné depuis la source Math-Net.Ru

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Scattering of acoustic phonons by linear defects is studied in the continuum limit of elasticity theory and the scattering matrix induced by the change in the phase of a phonon that passes round a defect in a closed contour is calculated. It is shown that on the background of a screw dislocation and for negative Frank angle of a disclination phonon modes containing components with kinetic angular momentum $\mu$ satisfying the inequality $0<|\mu|<1$ are singular, namely, near the defect line such components can increase unboundedly as $\rho^\mu$, where $\rho$ is the distance to the line of the defect. In the presence of singular modes, the curvature of the gauge group $G=SO(3)\rhd T(3)$, which is concentrated on the defects, leads to transitions between different polarizations. The topological interaction plays a leading role in the case when the phonon wavelength is much greater than the scattering length corresponding to scattering by the short-range potential of the defect core and, thus, it is most important in problems with long-range correlations. 
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     author = {E. M. Serebryanyi},
     title = {Topological interaction of phonons with dislocations and disclinations. {II.~The~scattering} problem},
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E. M. Serebryanyi. Topological interaction of phonons with dislocations and disclinations. II. The scattering problem. Teoretičeskaâ i matematičeskaâ fizika, Tome 86 (1991) no. 1, pp. 81-97. http://geodesic.mathdoc.fr/item/TMF_1991_86_1_a6/

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