Publications by authors named "S M Beaulieu"
Article Synopsis
- Researchers used advanced momentum microscopy to investigate the electronic properties of the topological Dirac semimetal 1T-ZrTe, specifically focusing on the behavior of its Dirac cone above the Fermi level.
- They discovered the role of different scattering processes in how electrons relax, observing important electron-hole interactions and finding that the electrons' lifetime correlates linearly with their excess energy.
- The study offers new insights into the excited state dynamics of 1T-ZrTe, contributing to the understanding of ultrafast electron behaviors in 3D topological materials.
The discovery of inactive hydrothermal vent sulfide features near 9°50'N on the East Pacific Rise provides an opportunity to investigate the distribution and feeding ecology of communities inhabiting this type of habitat. We quantify megafaunal distributions on two features, Lucky's Mound and Sentry Spire, to determine how taxonomic composition and feeding traits vary with vertical elevation. Fifty-one morphotypes, categorized by feeding mode, were identified from three levels of the features (spire, apron, and base) and the surrounding flat oceanic rise.
View Article and Find Full Text PDFThe topology of the electronic band structure of solids can be described by its Berry curvature distribution across the Brillouin zone. We theoretically introduce and experimentally demonstrate a general methodology based on the measurement of energy- and momentum-resolved optical transition rates, allowing to reveal signatures of Berry curvature texture in reciprocal space. By performing time- and angle-resolved photoemission spectroscopy of atomically thin WSe using polarization-modulated excitations, we demonstrate that excitons become an asset in extracting the quantum geometrical properties of solids.
View Article and Find Full Text PDFBackground: Approximately two-thirds of patients transported to emergency departments (ED) for a fall are discharged from the ED without urgent treatment. This pilot study tests the feasibility of implementing a pre-hospital falls-assessment protocol performed by emergency medical technicians (EMTs) to determine whether a patient who fell needs an ED assessment or could be referred safely to a community resource.
Methods: The protocol was administered by trained EMTs to adults aged ≥ 65 after a fall between October 2019 and March 2020 in Sherbrooke (QC).