Momentum-dependent electromagnetic T-matrix and dynamic effective properties of random media

Yves-Patrick Pellegrini, Pascal Thibaudeau and D. Brian Stout

Physica A: Statistical Mechanics and its Applications, 1997, vol. 241, issue 1, 72-76

Abstract: We discuss the problem of the dynamic dielectric and magnetic response on the whole frequency range of a composite material. We derive exact one-body expressions of the momentum-dependent mean constitutive kernels, for an assembly of dielectric and magnetic spheres of finite size, on the basis of their T-matrix. The effective homogeneous-like constitutive constants are defined, and used in a coherent potential approximation. In a second step, we solve the dispersion relation in order to extract observable quantities.

Keywords: Disordered media; Dynamic dielectric and magnetic response; Effective response kernel; Momentum-dependent T-matrix; Coherent potential approximation; Spatial dispersion; Eddy currents; Induced diamagnetism (search for similar items in EconPapers)
Date: 1997
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:241:y:1997:i:1:p:72-76

DOI: 10.1016/S0378-4371(97)00061-7

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