Intrinsic Localized Modes in Anharmonic Crystals
A. J. SieversLaboratory of Atomic and Solid State Physics and Materials Science Center, Cornell University, Ithaca, New York 14853Sachio TakenoLaboratory of Atomic and Solid State Physics and Materials Science Center, Cornell University, Ithaca, New York 14853
1988en
ABI
Annotatsiya
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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