Tunability of materials and structures for THz spectral range; Dvojčata, domény, hybridní struktury

“Tunable materials and structures for THz spectral range”

I will present results of an experimental study of tunable dielectric properties of strontium titanate. The primary tool of this investigation is the terahertz time-domain spectroscopy, which was used for the characterization of the complex permittivity in single crystals and various strained thin film structures. The dielectric properties of the samples were probed at different temperatures and under various electric fields. The results provide an insight on the soft-mode potential and its anharmonicity and, for example, on the stoichiometry composition of the film.