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

0494627 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
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
Grant CEP: GA ČR GA15-04121S
Institucionální podpora: RVO:68378271
Klíčová slova: domain walls * ferroelectricity * bismuth ferrite
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.736, rok: 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.

Trvalý link: http://hdl.handle.net/11104/0287737