Phys. Rev. Lett. 61, 970 - 973 (1988)Intrinsic Localized Modes in Anharmonic Crystals |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1974: |
A. J. Sievers
Laboratory of Atomic and Solid State Physics and Materials Science Center, Cornell University, Ithaca, New York 14853
S. Takeno
Department of Physics, Faculty of Engineering and Design, Kyoto Institute of Technology, Kyoto, Japan
Received 7 April 1988
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.
©1988 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v61/p970
DOI: 10.1103/PhysRevLett.61.970
PACS: 63.20.Ry, 63.20.Mt, 63.20.Pw, 67.80.Mg
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