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A new type of local polariton at the interface of gyrotropic enantiomorphic crystals

  • Low-Dimensional Systems and Surface Physics
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Abstract

It is shown that a new type of local polariton can propagate at the interface of enantiomorphic twins—gyrotropic crystals with left-handed and right-handed rotation of the polarization plane. The wave function of these local polaritons oscillates strongly, with changes of sign, over lengths of the order of the lattice constant near the interface, and the period of the spatial oscillations grows with increasing distance from the interface. The local polariton term is detached from the band of delocalized states toward higher frequencies. Calculations of the radiation broadening of this term show that, for a local polariton, the effect of a giant increase of the decay (“superradiance”) is possible. The magnitude of the polarization rotation due to a local polariton has been found.

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Authors and Affiliations

  1. Institute of Physics and Power Engineering, 249020, Obninsk, Kaluga Oblast’, Russia

    O. A. Dubovskii & A. V. Orlov

Authors
  1. O. A. Dubovskii
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  2. A. V. Orlov
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Fiz. Tverd. Tela (St. Petersburg) 41, 337–340 (February 1999)

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Dubovskii, O.A., Orlov, A.V. A new type of local polariton at the interface of gyrotropic enantiomorphic crystals. Phys. Solid State 41, 302–305 (1999). https://doi.org/10.1134/1.1130772

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  • DOI: https://doi.org/10.1134/1.1130772

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