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

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.
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https://hal-cea.archives-ouvertes.fr/cea-00412640
Contributor : Yves-Patrick Pellegrini <>
Submitted on : Wednesday, September 2, 2009 - 1:02:45 PM
Last modification on : Thursday, January 23, 2020 - 6:22:07 PM

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Yves-Patrick Pellegrini, Pascal Thibaudeau, Brian Stout. Momentum-dependent electromagnetic T-matrix and dynamic effective properties of random media. Fourth International Conference on Electrical Transport and Optical Properties of Inhomogeneous Media (ETOPIM 4), Jul 1996, St Petersburg / Moscow, Russia. pp.72-76, ⟨10.1016/S0378-4371(97)00061-7⟩. ⟨cea-00412640⟩

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