August 22, 1988

Intrinsic Localized Modes in Anharmonic Crystals

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Resumen

A new kind of localized mode is proposed to occur in a pure anharmonic lattice. Its localization properties are similar to those of a localized mode for a force-constant defect in a harmonic lattice. These modes, which are thermally generated like vacancies but with much smaller activation energies, may appear at cryogenic temperatures in strongly anharmonic solids such as quantum crystals as well as in conventional solids.

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Sievers et al. (Mon,) studied this question.

synapsesocial.com/papers/6a17acf8aeefdf6d9c12d6cf https://doi.org/https://doi.org/10.1103/physrevlett.61.970

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