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Soft modes in semiconducting SrTiO3 |
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| Authors: | D Wagner D Bäuerle F Schwabl B Dorner H Kraxenberger |
| Institution: | (1) Angewandte Physik, Johannes-Kepler-Universität Linz, A-4040 Linz, Austria;(2) Theoretische Physik, Johannes-Kepler-Universität Linz, A-4040 Linz, Austria;(3) Institut Max von Laue — Paul Langevin, F-38042 Grenoble, France |
| Abstract: | The temperature and concentration dependence of the soft zone boundary mode in heavily reduced SrTiO3 was studied by means of inelastic neutron scattering. It was found that the 105 K structural phase transition is suppressed completely for about 2% oxygen vacancies. The results are discussed in terms of recent models. |
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