Local Polariton States in Polar Crystals with Impurities
نویسندگان
چکیده
We show that an impurity embedded in an ionic crystal can give rise to a novel kind of local states. These states exist within a polariton gap of a material and are a mix of excitations of the crystal, such as phonons or excitons, and the transverse electromagnetic field. Electromagnetic component of the states along with the corresponding excitations of the material are localized in the vicinity of an impurity. Typeset using REVTEX
منابع مشابه
Concept of local polaritons and optical properties of mixed polar crystals
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متن کاملX iv : c on d - m at / 9 70 80 28 v 1 4 A ug 1 99 7 Local polariton states in impure ionic crystals
We consider dynamics of an ionic crystal with a single impurity in the vicinity of the polariton resonance. We show that if the polariton spectrum of the host crystal allows for a gap between polariton branches, the defect gives rise to a novel kind of local states with frequencies within the gap. Despite the atomic size of the impurity we find that new local states are predominated by long wav...
متن کاملLocal polariton states in impure ionic crystals
We consider the dynamics of an ionic crystal with a single impurity in the vicinity of the polariton resonance. We show that if the polariton spectrum of the host crystal allows for a gap between polariton branches, the defect gives rise to local states with frequencies within the gap. Despite the atomic size of the impurity we find that the in-gap local states are predominated by long-waveleng...
متن کاملar X iv : c on d - m at / 9 70 80 28 v 2 6 J an 1 99 8 Local polariton states in impure ionic crystals
We consider the dynamics of an ionic crystal with a single impurity in the vicinity of the polariton resonance. We show that if the polariton spectrum of the host crystal allows for a gap between polariton branches, the defect gives rise to a novel kind of local states with frequencies within the gap. Despite the atomic size of the impurity we find that new local states are predominated by long...
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