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4 papers
Establishing quasi-linear quadrupole functional topology by oxygen-vacancy engineering at a ferroelectric domain wall
Hemaprabha Elangovan, Maya Barzilay, Jiawei Huang +3
Oxygen vacancies in two-dimensional metal-oxide structures garner much attention due to unique conductive, magnetic and even superconductive functionalities they induce. Ferroelect…
Polarization Origin of Photoconductivity in MAPbI3 Thin Films
Rohit Saraf, Cecile Saguy, Vivek Maheshwari +2
Hybrid-halide perovskite (HHP) films exhibit exceptional photo-electric properties. These materials are utilized for highly efficient solar cells and photoconductive technologies.…
Giant Superelastic Piezoelectricity in Flexible Ferroelectric Membranes
Hemaprabha Elangovan, Maya Barzilay, Sahar Seremi +4
Mechanical displacement in commonly used piezoelectric materials is typically restricted to linear or biaxial in nature and to a few percent of the material dimensions. Here, we sh…
Surface nucleation of the paraelectric phase in ferroelectric BaTiO3: Atomic scale mapping
Maya Barzilay, Hemaprabha Elangovan, Yachin Ivry
In ferroelectricity, atomic-scale dipole moments interact collectively to produce strong electro-mechanical coupling and switchable macroscopic polarization. Hence, the functionali…