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arXiv · 1410.3124

Terahertz Electrodynamics of $180^\circ$ Domain Walls in Thin Ferroelectric Films

Igor Luk'yanchuk·Alexey Pakhomov·Anaïs Sené·Alexandr Sidorkin·Valerii Vinokur
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Abstract

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.

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Igor Luk'yanchuk, Alexey Pakhomov, Anaïs Sené, Alexandr Sidorkin, Valerii Vinokur. 2014-10-12. Terahertz Electrodynamics of $180^\circ$ Domain Walls in Thin Ferroelectric Films. https://arxiv.org/abs/1410.3124

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