2 citations · 2 across the 5 of their papers we have counts for
13 papers · 1 filter
Efficient Large-Scale STEM-EELS Simulations With Torched-TACAW
Martin Osmera, João Vaz, Paul M. Zeiger +1
The time auto-correlation of auxiliary wave functions (TACAW) method enables efficient simulations of ultra-low-loss electron energy loss spectra (EELS) arising from vibrational an…
Atomic-Scale Observation of Symmetry Breaking in Altermagnetic MnTe
Guodong Ren, Jonathan M. DeStefano, Xiao-Wei Zhang +20
The recent discovery of altermagnetism has sparked growing interest in compensated magnetic systems as promising platforms for highly scalable spintronics. Altermagnetism is a dist…
Theory of Momentum-Resolved Electron Energy-Loss Spectra of Coupled Phonon and Magnon Excitations
José Ángel Castellanos-Reyes, Ivan P. Miranda, Paul M. Zeiger +2
We develop a theory of momentum-resolved electron energy-loss spectra in the scanning transmission microscope (STEM-EELS) that captures the effects of coupled phonon and magnon exc…
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…
Systematic Absences of Optical Phonon Modes in Phonon Dispersion Measured by Electron Microscopy
Aowen Li, Paul Zeiger, Zuxian He +4
Phonon dispersion is widely used to elucidate the vibrational properties of materials. As an emerging technique, momentum-resolved vibrational spectroscopy in scanning transmission…
Inelastic electron scattering at large angles: the phonon polariton contribution
Hongbin Yang, Paul Zeiger, Andrea Konečná +11
We explore the inelastic electron scattering in SrTiO3, PbTiO3, and SiC in their phonon energy range, challenging the assumption that phonon polaritons are excluded at large angles…