%0 Journal Article
%T Terahertz Electrodynamics of $180^\circ$ Domain Walls in Thin Ferroelectric Films
%A Igor Luk'yanchuk
%A Alexey Pakhomov
%A Ana£¿s Sen¨¦
%A Alexandr Sidorkin
%A Valerii Vinokur
%J Physics
%D 2014
%I arXiv
%X We investigate oscillation dynamics of a periodic structure of the $180^\circ$ domain walls in nanometricaly thin substrate-deposited ferroelectric films and superlattices. We calculate dynamic permittivity of such structures and reveal a collective resonance mode, which in the typical ferroelectric compounds, PbTiO3/SrTiO3, lies in the sub- and low THz frequency range of 0.3-3THz. We propose the reflection-absorbtion spectroscopy experiments to observe this mode.
%U http://arxiv.org/abs/1410.3124v3