Far infrared properties of the rare-earth scandate DyScO3

Details Far infrared properties of the rare-earth scandate DyScO3 Far infrared properties of the rare-earth scandate DyScO3

2010-11-02

arxiv.org/abs/1011.0703v1

J. Phys.: Condens. Matter 22, 355402 (2010)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1088/0953-8984/22/35/355402

We present reflectance measurements in the infrared region on a single crystal the rare earth scandate DyScO3. Measurements performed between room temperature and 10 K allow to determine the frequency of the infrared-active phonons, never investigated experimentally, and to get information on their temperature dependence. A comparison with the phonon peak frequency resulting from ab-initio computations is also provided. We finally report detailed data on the frequency dependence of the complex refractive index of DyScO3 in the terahertz region, which is important in the analysis of terahertz measurements on thin films deposited on DyScO3.

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