Ultrafast Activation and Tuning of Topological Textures in Ferroelectric Nanostructures

Sergey Prosandeev (1) , Sergei Prokhorenko (1) , Yousra Nahas (1) , Julie Grollier (2) , Diyar Talbayev (3) , Brahim Dkhil (4) , Laurent Bellaiche (1)

1 Institute for nanosciences and engineering and physics departement [University of Arkansas]
2 Laboratoire Albert Fert (ex-UMPhy Unité mixte de physique CNRS/Thales)
3 Tulane University
4 SPMS - Laboratoire Structures, Propriétés et Modélisation des solides

Polar topological textures are recently discovered in ultra-thin ferroelectrics, including stripe, labyrinth, or bubble states. Enabling to shape on-demand, these topologies can provide an original platform for potential applications. Here, using first-principle-based calculations, it is shown that THz electric field pulses are an efficient means for generating a plethora of topological states in ultrathin films made by a prototypical ferroelectric system, depending on the characteristics of these pulses and films. Consequently, these ultrafast electrical pulses in ultra-thin ferroelectrics offer key ingredients for mimicking neuronal and synaptic behaviors, including all-optical devices, and open a new avenue for topological objects to neuromorphic systems.

Domaines: Physique [physics]

Sergey Prosandeev, Sergei Prokhorenko, Yousra Nahas, Julie Grollier, Diyar Talbayev, et al.. Ultrafast Activation and Tuning of Topological Textures in Ferroelectric Nanostructures. Advanced Electronic Materials, 2022, 8 (12), pp.2200808. ⟨10.1002/aelm.202200808⟩. ⟨hal-03975126⟩