Photoinduced Domain Pattern Transformation in Ferroelectric/Dielectric Superlattices
arXiv:1705.01846 · doi:10.1103/PhysRevLett.119.057601
Abstract
The nanodomain pattern in ferroelectric/dielectric superlattices transforms to a uniform polarization state under above-bandgap optical excitation. X-ray scattering reveals a disappearance of domain diffuse scattering and an expansion of the lattice. The reappearance of the domain pattern occurs over a period of seconds at room temperature, suggesting a transformation mechanism in which charge carriers in long-lived trap states screen the depolarization field. A Landau-Ginzburg-Devonshire model predicts changes in lattice parameter and a critical carrier concentration for the transformation.
References in corpus (11)
- First principles calculations of the Shift Current Bulk Photovoltaic Effect in Ferroelectrics
- Effect of epitaxial strain on the spontaneous polarization of thin film ferroelectrics
- Ab initio study of ferroelectric domain walls in PbTiO3
- Polarization Relaxation Induced by Depolarization Field in Ultrathin Ferroelectric BaTiO Capacitors
- Light-induced size changes in BiFeO3 crystals
- Ultrathin films of ferroelectric solid solutions under residual depolarizing field
- Atomic-scale compensation phenomena at polar interfaces
- Localized excited charge carriers generate ultrafast inhomogeneous strain in the multiferroic BiFeO
- Extrinsic and Intrinsic Charge Trapping at the Graphene/Ferroelectric Interface
- Ferroelectric and anti-ferroelectric coupling in superlattices of paraelectric perovskites at room temperature
- Optical Writing of Magnetic Properties by Remanent Photostriction
Cited by in corpus (4)
- Indirect but Efficient: Laser-Excited Electrons Can Drive Ultrafast Polarization Switching in Ferroelectric Materials
- Nanosecond Optically Induced Phase Transformation in Compressively Strained BiFeO3 on LaAlO3
- Optically Induced Picosecond Lattice Compression in the Dielectric Component of a Strongly Coupled Ferroelectric/Dielectric Superlattice
- Role of temperature-dependent electron trapping dynamics in the optically driven nanodomain transformation in a PbTiO/SrTiO superlattice