O.S.Kushnir, L.O.Lokot
Quantum-mechanical calculations for the dielectric permittivity tensor in incommensurately modulated ionic-type insulators are carried out. The microscopic Fourier components of the tensor are obtained. The role of different reciprocal lattice vectors in the optical response of crystal is clarified
Key words: insulator, dielectric permittivity tensor, incommensurate phase
doi 10.3116/16091833/1/1/40/2000
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