Dynamic critical scattering near the smectic-A—nematic phase transition in CBOOA |
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| Authors: | H.M. Conrad H.H. Stiller C.G.B. Frischkorn R.M. Richardson |
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| Affiliation: | Inst. f. Festkörperforschung der KFA Jülich GmbH, D-5170 Jülich, W. Germany;Inst. Laue-Langevin, F-38042, Grenoble, France |
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| Abstract: | High resolution neutron quasielastic scattering has been applied to a study on the critical dynamics near the smectic-A—nematic phase transition in CBOOA. A line narrowing is observed for a certain value of the momentum transfer. We interpret this narrowing as a critical slowing down of the smectic order parameter fluctuations near the transition temperature TSN. The relaxation times vary between 10-8 and 10-7 sec for a temperature interval of 2 K below TSN. |
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