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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 10: Ferroics - Domains and Domain Walls

KFM 10.9: Vortrag

Dienstag, 2. April 2019, 12:05–12:20, H47

Charge-carrier localization at ferroelectric domain walls in BiFeO₃ — •Sabine Körbel and Stefano Sanvito — School of Physics and CRANN, Trinity College Dublin, Ireland

BiFeO₃ is a prototype material for investigating the photovoltaic effect in ferroelectrics, and it has been suggested that ferroelectric domain walls in BiFeO₃ and other ferroelectrics are beneficial for separating charge carriers.

In order to elucidate the role of the domain walls in the separation of photogenerated charge carriers, we studied electron and hole localization at ferroelectric domain walls in BiFeO₃, using density-functional theory.

In this talk we will discuss the localization behavior of separate electrons and holes and that of electron-hole pairs.