101 citations · 102 across the 4 of their papers we have counts for
7 papers · 1 filter
Fabrication and characterization of boron-terminated tetravacancies in monolayer hBN using STEM, EELS and electron ptychography
Dana O. Byrne, Stephanie M. Ribet, Demie Kepaptsoglou +3
Tetravacancies in monolayer hexagonal boron nitride (hBN) with consistent edge termination (boron or nitrogen) form triangular nanopores with electrostatic potentials that can be l…
Magnon spectroscopy in the electron microscope
Demie Kepaptsoglou, José Ángel Castellanos-Reyes, Adam Kerrigan +9
The miniaturisation of transistors is approaching its limits due to challenges in heat management and information transfer speed. To overcome these obstacles, emerging technologies…
Evaluating the local bandgap across InxGa1-xAs multiple quantum wells in a metamorphic laser via low-loss EELS
Nicholas Stephen, Ivan Pinto-Huguet, Robert Lawrence +8
Using high resolution scanning transmission electron microscopy and low-loss electron energy loss spectroscopy, we correlate the local bandgap (Eg), indium concentration, and strai…
Theory of momentum-resolved magnon electron energy loss spectra: The case of Yttrium Iron Garnet
Julio A. do Nascimento, Phil J. Hasnip, S. A. Cavill +5
We explore the inelastic spectra of electrons impinging in a magnetic system. The methodology here presented is intended to highlight the charge-dependent interaction of the electr…
Confined magnon dispersion in ferromagnetic and antiferromagnetic thin films in a second quantization approach: the case of Fe and NiO
Julio A. do Nascimento, Adam Kerrigan, S. A. Cavill +4
We present a methodology based on the calculation of the inelastic scattering from magnons via the spin scattering function in confined geometries such as thin films using a second…
Unveiling the impact of temperature on magnon diffuse scattering detection in the transmission electron microscope
José Ángel Castellanos-Reyes, Paul Zeiger, Anders Bergman +4
Magnon diffuse scattering (MDS) signals could be studied with high spatial resolution in scanning transmission electron microscopy (STEM), thanks to recent technological progress i…