Electron trapping by neutral pristine ferroelectric domain walls in BiFeO.sub.3./sub.

0494627 - FZÚ 2019 RIV US eng J - Journal Article
Körbel, S. - Hlinka, Jiří - Sanvito, S.
Electron trapping by neutral pristine ferroelectric domain walls in BiFeO₃.
Physical Review B. Roč. 98, č. 10 (2018), s. 1-5, č. článku 100104. ISSN 2469-9950. E-ISSN 2469-9969
R&D Projects: GA ČR GA15-04121S
Institutional support: RVO:68378271
Keywords : domain walls * ferroelectricity * bismuth ferrite
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.736, year: 2018

First-principles calculations for pristine neutral ferroelectric domain walls in BiFeO3 reveal that excess electrons are selectively trapped by the domain walls, while holes are only weakly attracted. Such trapped excess electrons may be responsible for the thermally activated electrical conductivity at domain walls observed in experiments. In the case of a periodic array of domain walls, the trapped excess electrons create a zigzag potential, whose amplitude depends on the electron concentration in the material and the domain-wall distance.

Permanent Link: http://hdl.handle.net/11104/0287737