Physics and applications of charged domain walls

0498287 - FZÚ 2019 RIV GB eng J - Journal Article
Bednyakov, Petr - Sturman, B.I. - Sluka, T. - Tagantsev, A.K. - Yudin, Petr
Physics and applications of charged domain walls.
NPJ Computational. Roč. 4, č. 1 (2018), s. 1-11, č. článku 65. E-ISSN 2057-3960
R&D Projects: GA MŠMT EF16_019/0000760; GA MŠMT(CZ) LO1409
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : charged domain walls * CDWs
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 9.200, year: 2018

The charged domain wall is an ultrathin (typically nanosized) interface between two domains it carries bound charge owing to a change of normal component of spontaneous polarization on crossing the wall. In contrast to hetero-interfaces between different materials, charged domain walls (CDWs) can be created, displaced, erased, and recreated again in the bulk of a material. Screening of the bound charge with free carriers is often necessary for stability of CDWs, which can result in giant two-dimensional conductivity along the wall. Usually in nominally insulating ferroelectrics, the concentration of free carriers at the walls can approach metallic values. Thus, CDWs can be viewed as ultrathin reconfigurable strongly conductive sheets embedded into the bulk of an insulating material. The present review is aiming at a concise presentation of the main physical ideas behind CDWs and a brief overview of the most important theoretical and experimental findings in the field.
Permanent Link: http://hdl.handle.net/11104/0290683