Volume 122, Number 6, June 2018
|Number of page(s)||7|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||01 August 2018|
Ion and mixed electron-ion screening of charged domain walls in ferroelectrics
Institute of Automation and Electrometry, Russian Academy of Sciences - Koptyug ave. 1, 630090 Novosibirsk, Russia
Received: 7 June 2018
Accepted: 11 July 2018
We consider theoretically the properties of charged domain walls (CDWs) in proper ferroelectrics for the ion and mixed electron-ion charge screening mechanisms. This includes an analysis of the spatial profiles of the polarization and electrostatic potential in the one-dimensional case, determination of the characteristic spatial widths, estimates of the CDW formation energies, and comparison with the CDW characteristics relevant to the electron-hole screening regime. Also we consider restrictions on the ion-related screening scenarios caused by slowness of the ion migration at ambient conditions.
PACS: 77.80.Dj – Domain structure; hysteresis / 72.20.Jv – Charge carriers: generation, recombination, lifetime, and trapping
© EPLA, 2018
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