Polarization-Control of the Potential Barrier at the Electrode Interfaces in Epitaxial Ferroelectric Thin FilmsClick to copy article linkArticle link copied!
- Ioana Pintilie
- Cristian Mihail Teodorescu
- Corneliu Ghica
- Cristina Chirila
- Andra Georgia Boni
- Luminita Hrib
- Iuliana Pasuk
- Raluca Negrea
- Nicoleta Apostol
- Lucian Pintilie
Abstract

Electrode interface is a key element in controlling the macroscopic electrical properties of the ferroelectric capacitors based on thin films. In the case of epitaxial ferroelectrics, the electrode interface is essential in controlling the leakage current and the polarization switching, two important elements in the read/write processes of nonvolatile memories. However, the relation between the polarization bound charges and the electronic properties of the electrode interfaces is not yet well understood. Here we show that polarization charges are controlling the height of the potential barriers at the electrode interfaces in the case of Pb(Zr,Ti)O3 and BaTiO3 epitaxial films. The results suggest that the height is set to a value allowing rapid compensation of the depolarization field during the polarization switching, being almost independent of the metals used for electrodes. This general behavior open a new perspective in engineering interface properties and designing new devices based on epitaxial ferroelectrics.
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The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated.