Photovoltaic response around a unique 180 ∘ ferroelectric domain wall in single-crystalline BiFeO$_3$
| Autor: | Blouzon, C., Chauleau, J-Y., Mougin, A., Fusil, S., Viret, M. |
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| Přispěvatelé: | Laboratoire Nano-Magnétisme et Oxydes (LNO), Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Unité mixte de physique CNRS/Thales (UMPhy CNRS/THALES), Centre National de la Recherche Scientifique (CNRS)-THALES, ANR-12-BS04-0010,MULTIDOLLS,Parois de domaines multiferroiques(2012), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), THALES [France]-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Physical Review B: Condensed Matter and Materials Physics (1998-2015) Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2016, 94, pp.94107. ⟨10.1103/PhysRevB.94.094107⟩ Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2016, 94, pp.94107. ⟨10.1103/PhysRevB.94.094107⟩ |
| ISSN: | 1098-0121 1550-235X |
| DOI: | 10.1103/PhysRevB.94.094107⟩ |
| Popis: | International audience; Using an experimental setup designed to scan a submicron sized light spot and collect the photogeneratedcurrent through larger electrodes, we map the photovoltaic response in ferroelectric BiFeO$_3$ single crystals. Westudy the effect produced by a unique 180° ferroelectric domain wall (DW) and show that the photocurrentmaps are significantly affected by its presence and shape. The effect is large in its vicinity and in the Schottkybarriers at the interface with the Au electrodes, but no extra photocurrent is observed when the illuminating spottouches the DW, indicating that this particular entity is not the heart of specific photoelectric properties. Using3D modeling, we argue that the measured effect is due to the spatial distribution of internal fields which aresignificantly affected by the charge of the DW due to its distortion. |
| Databáze: | OpenAIRE |
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