Depolarization field in thin ferroelectric films with account of semiconductor electrodes

TL;DR

This paper investigates how semiconductor electrodes with varying Debye screening lengths affect the depolarization field and properties of thin ferroelectric films using Ginzburg-Landau theory.

Contribution

It introduces a model that accounts for semiconductor electrode effects on ferroelectric films, highlighting the significant impact of highly doped electrodes.

Findings

Semiconductor electrodes with different Debye lengths alter the depolarization field.

Highly doped semiconductor electrodes significantly influence film properties.

The model extends understanding of ferroelectric-electrode interactions.

Abstract

Within the framework of the phenomenological Ginzburg-Landau theory influence of semiconductor electrodes on the properties of thin ferroelectric films is considered. The contribution of the semiconductor electrodes with different Debye screening length of carriers is included in functional of free energy. The influence of highly doped semiconductor electrodes on the depolarization field and the film properties was shown to be great.