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11 papers · 2 filters
First-principles investigation of the very large Perpendicular Magnetic Anisotropy at Fe|MgO Interfaces
H. X. Yang, J. H. Lee, M. Chshiev +3
The perpendicular magnetic anisotropy (PMA) arising at the interface between ferromagnetic transition metals and metallic oxides are investigated via first-principles calculations.…
Fast computing of scattering maps of nanostructures using graphical processing units
Vincent Favre-Nicolin, Johann Coraux, Marie-Ingrid Richard +1
Scattering maps from strained or disordered nano-structures around a Bragg reflection can either be computed quickly using approximations and a (Fast) Fourier transform, or using i…
Drain current modulation in a nanoscale field-effect-transistor channel by single dopant implantation
B. C. Johnson, G. C. Tettamanzi, A. D. C. Alves +9
We demonstrate single dopant implantation into the channel of a silicon nanoscale metal-oxide-semiconductor field-effect-transistor. This is achieved by monitoring the drain curren…
Random local strain effects in homovalent-substituted relaxor ferroelectrics: a first-principles study of BaTi0.74Zr0.26O3
Claire Laulhé, Alain Pasturel, Francoise Hippert +1
We present first-principles supercell calculations on BaTi0.74Zr0.26O3, a prototype material for relaxors with a homovalent substitution. From a statistical analysis of relaxed str…
High-pressure investigations of CaTiO3 up to 60 GPa using X-ray diffraction and Raman spectroscopy
Mael Guennou, Pierre Bouvier, Benjamin Krikler +3
In this work, we investigate calcium titanate (CaTiO3 - CTO) using X-ray diffraction and Raman spectroscopy up to 60 and 55 GPa respectively. Both experiments show that the orthorh…
Phonon Raman scattering of perovskite LaNiO3 thin films
N. Chaban, M. Weber, S. Pignard +1
We report an investigation of perovskite-type LaNiO3 thin films by Raman scattering in both various scattering configurations and as a function of temperature. The room-temperature…