27 citations · 110 across the 9 of their papers we have counts for
9 papers
Hafnia HfO is a Proper Ferroelectric
Aldo Raeliarijaona, R. E. Cohen
We clarify the nature of hafnia as a proper ferroelectric and show that there is a shallow double well involving a single soft polar mode as in well-known classic ferroelectrics. U…
Origin of Wake-Up Effect in Hafnia
Aldo Raeliarijaona, R. E. Cohen
We performed density functional theory (DFT) calculations on epitaxially strained hafnia. We demonstrate the stabilization of the ferroelectric () phase from the antiferr…
First-principles Calculations of Raman and Infrared Spectroscopy For Phase Identification and Strain Calibration of Hafnia
Aldo Raeliarijaona, R. E. Cohen
Using density functional perturbation theory (DFPT) we computed the phonon frequencies, Raman and IR activities of hafnia polymorphs (P4nmc, Pca2, Pmn2, Pbca OI,…
Origin of Ferroelectricity in Hafnia from Epitaxial Strain
Aldo Raeliarijaona, R. E. Cohen
Ferroelectric hafnia is being explored for next generation electronics due to its robust ferroelectricity in nanoscale samples and its compatibility with silicon. However, its ferr…
Regular and in-plane skyrmions and antiskyrmions from boundary instabilities
Shane Sandhoefner, Aldo Raeliarijaona, Rabindra Nepal +2
We formulate a theory of skyrmion and antiskyrmion generation using magnetic field and charge current pulses. We show that the topological defect can be created at an edge of a sys…
Spirals and skyrmions in antiferromagnetic triangular lattices
Wuzhang Fang, Aldo Raeliarijaona, Po-Hao Chang +2
We study realizations of spirals and skyrmions in two-dimensional antiferromagnets with a triangular lattice on an inversion-symmetry-breaking substrate. As a possible material rea…
Magnonic Analogue of Edelstein Effect in Antiferromagnetic Insulators
Bo Li, Alexander Mook, Aldo Raeliarijaona +1
We investigate the nonequilibrium spin polarization due to a temperature gradient in antiferromagnetic insulators, which is the magnonic analogue of the inverse spin-galvanic effec…
Phase Modulators Based on High Mobility Ambipolar ReSe2 Field-Effect Transistors
Nihar R. Pradhan, Carlos Garcia, Bridget Isenberg +11
We fabricated ambipolar field-effect transistors (FETs) from multi-layered triclinic ReSe2, mechanically exfoliated onto a SiO2 layer grown on p-doped Si. In contrast to previous r…
Boundary twists, instabilities, and creation of skyrmions and antiskyrmions
Aldo Raeliarijaona, Rabindra Nepal, Alexey A. Kovalev
We formulate and study the general boundary conditions dictating the magnetization profile in the vicinity of an interface between magnets with dissimilar properties. Boundary twis…