Photovoltaic response around a unique 180 ∘ ferroelectric domain wall in single-crystalline BiFeO$_3$

C. Blouzon 1 J-Y. Chauleau 1 A. Mougin 2 S. Fusil 3 M. Viret 1
1 LNO - Laboratoire Nano-Magnétisme et Oxydes
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
2 LPS - Laboratoire de Physique des Solides
3 UMP CNRS/THALES - Unité mixte de physique CNRS/Thalès
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.
Type de document :
Article dans une revue
Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 94, pp.94107. 〈10.1103/PhysRevB.94.094107〉
Liste complète des métadonnées

Littérature citée [23 références]  Voir  Masquer  Télécharger
https://hal-cea.archives-ouvertes.fr/cea-01485914
Contributeur : Dominique Girard <>
Soumis le : jeudi 9 mars 2017 - 15:01:09
Dernière modification le : jeudi 15 mars 2018 - 15:06:36
Document(s) archivé(s) le : samedi 10 juin 2017 - 14:34:07

Fichier

PhysRevB.94.094107.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

CEA | DSM-IRAMIS | IRAMIS-SPEC | UNIV-PARIS-SACLAY | CEA-DRF | CEA-UPSAY

Citation

C. Blouzon, J-Y. Chauleau, A. Mougin, S. Fusil, M. Viret. Photovoltaic response around a unique 180 ∘ ferroelectric domain wall in single-crystalline BiFeO$_3$. Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 94, pp.94107. 〈10.1103/PhysRevB.94.094107〉. 〈cea-01485914〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

66

Téléchargements de fichiers

61

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD