Lattice vibrations in KCuF3
| Autor: | Paolo Ghigna, Ch. Kant, Alois Loidl, H.-A. Krug von Nidda, Vladimir Tsurkan, Franz Mayr, Zhe Wang, Joachim Deisenhofer, M. Schmidt, F. Schrettle |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Popis: | We report on polarization dependent reflectivity measurements in KCuF3 in the far-infrared frequency regime. The observed IR active phonons at room temperature are in agreement with the expected modes for tetragonal symmetry. We observe a splitting of one mode already at 150 K and the appearance of a new mode in the vicinity of the Neel temperature. |
| Databáze: | OpenAIRE |
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