On asymmetric propagation on transverse acoustic waves near the structural phase transition in RbH3(SeO3)2 |
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| Authors: | V. Dvořák S.K. Esayan |
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| Affiliation: | Institute of Physics, Czech. Acad. Sci., Na Slovance 2, 180 40 Praha 8, Czechoslovakia;A.F. Ioffe Physico-Technical Institute of the Academy of Sciences of the USSR, 194021 Leningrad, USSR |
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| Abstract: | Recently ultrasonic measurements of the RbH3(SeO3)2 crystal have shown that a transverse acoustic wave propagating along the modulation axis of the incommensurate structure (c-axis) and polarized along the polar axis (b-axis) exhibits greater temperature anomalies of its velocity and damping than a wave propagating along the b-axis and polarized along the c-axis. The possible explanation of this experimental result is given on the basis of the Landau theory. |
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