26 citations · 93 across the 6 of their papers we have counts for
4 papers · 1 filter
Dynamic Tilting of Ferroelectric Domain Walls via Optically Induced Electronic Screening
Youngjun Ahn, Arnoud S. Everhardt, Hyeon Jun Lee +8
Optical excitation perturbs the balance of phenomena selecting the tilt orientation of domain walls within ferroelectric thin films. The high carrier density induced in a low-strai…
Dynamical Scattering in Coherent Hard X-Ray Nanobeam Bragg Diffraction
A. Pateras, J. Park, Y. Ahn +5
Unique intensity features arising from dynamical diffraction arise in coherent x-ray nanobeam diffraction patterns of crystals having thicknesses larger than the x-ray extinction d…
Role of temperature-dependent electron trapping dynamics in the optically driven nanodomain transformation in a PbTiO/SrTiO superlattice
Joonkyu Park, Youngjun Ahn, Jack A. Tilka +6
The spontaneously formed striped polarization nanodomain configuration of a PbTiO/SrTiO superlattice transforms to a uniform polarization state under above-bandgap illu…
Photoinduced Domain Pattern Transformation in Ferroelectric/Dielectric Superlattices
Youngjun Ahn, Joonkyu Park, Anastasios Pateras +7
The nanodomain pattern in ferroelectric/dielectric superlattices transforms to a uniform polarization state under above-bandgap optical excitation. X-ray scattering reveals a disap…