Critical opalescence in SrTiO3 |
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| Authors: | EF Steigmeier H Auderset G Harbeke |
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| Institution: | Laboratories RCA Ltd., Zurich, Switzerland |
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| Abstract: | We have measured the temperature and angular dependence of the total scattered light intensity near the structural phase transition of SrTiO3 and interpreted it in terms of the theory of Ornstein and Zernike. It is concluded that in light scattering the direct coupling to the phonon density fluctuations or central mode in SrTiO3 prevails over the indirect coupling via the soft mode. |
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