Erratum: Photovoltage from ferroelectric domain walls in BiFeO${}_3$

Abstract

In the original article a mistake in the methodology lead to an incorrect prediction of exciton delocalization below a critical exciton density. This unrealistic delocalized exciton state yielded a sizable domain-wall photovoltage. When done correctly, the simulations yield self-trapped (localized) excitons at all considered exciton densities, without any evidence for a transition to a delocalized exciton. This realistic self-trapped exciton state yields only a negligible domain-wall photovoltage. The original conclusion that ferroelectric domain walls could be responsible for the measured photovoltage if carrier lifetime and diffusion length are higher than expected is incorrect. Correct is: The domain-wall photovoltage in BiFeO3 is much too small to explain the measured photovoltage. The original analysis is meaningful for ferroelectrics without carrier self-trapping, not for BiFeO3.

References in corpus (12)

• Excitonic Effects and Optical Spectra of Single-Walled Carbon Nanotubes
• Very large spontaneous electric polarization in BiFeO3 single crystals at room temperature and its evolution under cycling fields
• First principles calculations of the Shift Current Bulk Photovoltaic Effect in Ferroelectrics
• Ab initio study of ferroelectric domain walls in PbTiO3
• Linear and Nonlinear Optical constants of BiFeO_3
• Exciton band structure in two-dimensional materials
• Ultrafast carrier dynamics and radiative recombination in multiferroic BiFeO${}_3$
• Domain walls in a perovskite oxide with two primary structural order parameters: first-principles study of BiFeO${}_3$
• Structural relaxations in electronically excited poly(para-phenylene)
• Localized Excitons and Breaking of Chemical Bonds at III-V (110) Surfaces
• XDFT: an efficient first-principles method for neutral excitations in molecules
• Electron trapping by neutral pristine ferroelectric domain walls in BiFeO${}_3$

Cited by in corpus (4)

• A coupled magneto-structural continuum model for multiferroic ${\mathrm{BiFeO}}_3$
• Optical signatures of defects in BiFeO${}_3$
• Energy profile and hopping barriers for small electron polarons at ferroelectric domain walls in bismuth ferrite from first principles
• Transition between large and small electron polaron at neutral ferroelectric domain walls in BiFeO${}_3$