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Dynamical Behavior of Aperiodic Intergrowth Crystals

Title data

Schmicker, D. ; van Smaalen, Sander:
Dynamical Behavior of Aperiodic Intergrowth Crystals.
In: International Journal of Modern Physics B. Vol. 10 (1996) Issue 17 . - pp. 2049-2080.
ISSN 1793-6578
DOI: https://doi.org/10.1142/S0217979296000933

Abstract in another language

An overview is given of the current knowledge pertaining to the sliding mode in incommensurate intergrowth compounds. It is found that both theoretical understanding and experimental information is wanting. Responsible for the latter is the lack of high-quality, very pure crystals of incommensurate intergrowth compounds, thus destroying the sliding mode by the effect of pinning. A phenomenological description is presented of the sliding mode in the long wavelength limit, using an extension of the theory of elasticity. The six by six elastic tensor is extended to a nine by nine elastic tensor describing the elastic waves in (3+1)-dimensional aperiodic crystals. The equations of motion are solved and symmetry restrictions on the components of this elastic tensor are given for all superspace groups. Experimental information as obtained by Brillouin scattering, inelastic neutron scattering and X-ray diffraction is discussed against the background of the present theoretical knowledge. Particular attention is given to pinning, to damping and the existence of propagating and overdamped regimes, and to the polarization of the sliding mode.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 14 Jun 2016 13:56
Last Modified: 14 Jun 2016 13:56
URI: https://eref.uni-bayreuth.de/id/eprint/32686