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Journal articles
Photovoltaic response around a unique 180 ∘ ferroelectric domain wall in single-crystalline BiFeO$_3$
Abstract : Using an experimental setup designed to scan a submicron sized light spot and collect the photogenerated
current through larger electrodes, we map the photovoltaic response in ferroelectric BiFeO$_3$ single crystals. We
study the effect produced by a unique 180° ferroelectric domain wall (DW) and show that the photocurrent
maps are significantly affected by its presence and shape. The effect is large in its vicinity and in the Schottky
barriers at the interface with the Au electrodes, but no extra photocurrent is observed when the illuminating spot
touches the DW, indicating that this particular entity is not the heart of specific photoelectric properties. Using
3D modeling, we argue that the measured effect is due to the spatial distribution of internal fields which are
significantly affected by the charge of the DW due to its distortion.
Cited literature [23 references]
https://hal-cea.archives-ouvertes.fr/cea-01485914
Contributor : Dominique Girard <>
Submitted on : Thursday, March 9, 2017 - 3:01:09 PM
Last modification on : Friday, March 5, 2021 - 3:04:47 PM
Long-term archiving on: : Saturday, June 10, 2017 - 2:34:07 PM
Contributor : Dominique Girard <>
Submitted on : Thursday, March 9, 2017 - 3:01:09 PM
Last modification on : Friday, March 5, 2021 - 3:04:47 PM
Long-term archiving on: : Saturday, June 10, 2017 - 2:34:07 PM
File
PhysRevB.94.094107.pdf
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