Modeling the motion of ferroelectric domain walls with the classical Stefan problem

0524861 - FZÚ 2021 RIV US eng J - Článek v odborném periodiku
Yudin, Petr - Hrebtov, M. Yu. - Dejneka, Alexandr - McGilly, L.J.
Modeling the motion of ferroelectric domain walls with the classical Stefan problem.
Physical Review Applied. Roč. 13, č. 1 (2020), s. 1-10, č. článku 014006. ISSN 2331-7019. E-ISSN 2331-7019
Grant CEP: GA MŠMT(CZ) EF16_019/0000760
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: modeling * motion * ferroelectric * domain walls * Stefan problem
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.985, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevApplied.13.014006

With advances in nanotechnology, ferroelectric switching by individual domain walls (DWs) has become a subject of broad interest. Conventional models consider DW motion in a fixed homogeneous or inhomogeneous electric field. However, it is clear that the electric field commonly evolves in time due to the redistribution of bound charges and screening free charges on the ferroelectric surface, particularly due to surface conductance. Taking this effect into account remains a serious challenge. Here we propose a simple concept to describe simultaneously the evolution of the electric field and the DWmotion in a ferroelectric sample. The approach is based on a full analogy between charge transport during ferroelectric switching and heat transport in a moving melting front: the classical Stefan problem. The analogy helps in the establishment of control of DW motion in thin films.

Trvalý link: http://hdl.handle.net/11104/0309107