title: Spatially resolved photodetection in leaky ferroelectric BiFeO(3).
abstract: Potential gradients due to the spontaneous polarization of BiFeO(3)  yield asymmetric and nonlinear photocarrier dynamics. Photocurrent direction is determined by local ferroelectric domain orientation, whereas magnitude is spectrally centered around charged domain walls that are associated with oxygen vacancy migration. Photodetection can be electrically controlled by manipulating ferroelectric domain configurations.
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Gyungbuk, Korea.
authors.forename: Won-Mo
authors.initials: WM
authors.lastname: Lee
authors.forename: Ji Ho
authors.initials: JH
authors.lastname: Sung
authors.forename: Kanghyun
authors.initials: K
authors.lastname: Chu
authors.forename: Xavier
authors.initials: X
authors.lastname: Moya
authors.forename: Donghun
authors.initials: D
authors.lastname: Lee
authors.forename: Cheol-Joo
authors.initials: CJ
authors.lastname: Kim
authors.forename: Neil D
authors.initials: ND
authors.lastname: Mathur
authors.forename: S-W
authors.initials: SW
authors.lastname: Cheong
authors.forename: C-H
authors.initials: CH
authors.lastname: Yang
authors.forename: Moon-Ho
authors.initials: MH
authors.lastname: Jo
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D004553:Electric Conductivity; D004560:Electricity; D005290:Ferric Compounds / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D001729:Bismuth