85 citations · 162 across the 8 of their papers we have counts for
8 papers
Soft-mode nonlinearities away from ferroelectric phase transition
Payel Shee, Ipek Efe, Jingwen Li +3
The interplay between ionic and electronic subsystems dictates the behavior of structural phase transitions in polar dielectrics, a coupling mediated by soft optical phonon modes.…
Polarizing ultrathin ferroelectric BaTiO3 films through interfacial layer polarization
Ipek Efe, Edith Simmen, Tobias Goldenberger +3
An important requirement for the integration of ferroelectric thin films into devices is deterministic control of the polarization state in films of only a few unit cells in thickn…
Manipulating ferroelectricity without electrical bias: A perspective
Bixin Yan, Valentine Gillioz, Ipek Efe +1
Ferroelectric materials are established candidates for beyond complementary metal-oxide-semiconductor technology, owing to their non-volatile spontaneous electrical polarization. T…
Nanoscale electrostatic control in ferroelectric thin films through lattice chemistry
Ipek Efe, Alexander Vogel, William S. Huxter +7
Nanoscale electrostatic control of oxide interfaces enables physical phenomena and exotic functionalities beyond the realm of the bulk material. In technologically-relevant ferroel…
Magnetoelectric phase control at domain-wall-like epitaxial oxide multilayers
Elzbieta Gradauskaite, Chia-Jung Yang, Shovon Pal +2
Ferroelectric domain walls are nanoscale objects that can be created, positioned, and erased on demand. They often embody functional properties that are distinct from the surroundi…
Magnetoelectric effect in hydrogen harvesting: magnetic field as a trigger of catalytic reactions
Donghoon Kim, Ipek Efe, Harun Torlakcik +11
Magnetic fields have been regarded as an additional stimulus for electro- and photocatalytic reactions, but not as a direct trigger for catalytic processes. Multiferroic/magnetoele…
Layer and spontaneous polarizations in perovskite oxides and their interplay in multiferroic bismuth ferrite
Nicola A Spaldin, Ipek Efe, Marta D Rossell +1
We review the concept of surface charge, first in the context of the polarization in ferroelectric materials, and second in the context of layers of charged ions in ionic insulator…
On the happiness of ferroelectric surfaces and its role in water dissociation: the example of bismuth ferrite
Ipek Efe, Nicola A. Spaldin, Chiara Gattinoni
We investigate, using density functional theory, how the interaction between the ferroelectric polarization and the chemical structure of the (001) surfaces of bismuth ferrite infl…