Author: eiacocca
Lawrence was awarded funding for URA
Lawrence’s project “Investigating the dynamics of a macroscopic artificial spin ice” was selected for the UCCS’s Undergraduate Research Academy during summer 2023. Lawrence joins a select group of undergraduate students involved in scientific research and will participate in the workshops offered by the URA. Congratulations!
Announcement here.
APS March Meeting
Very nice talks at APS March Meeting and good company with Roopali Kukreja’s group. We presented Ghanem’s work on artificial spin ice and Iacocca gave an invited talk at the ultrafast magnetism symposium.
Ally at UCCS 3MT
Ally was selected for the finals of the 2023 UCCS Mountain Lion Grad Slam 3MT competition held on Friday, February 10. You can watch her 3-minutes presentation aimed to a broad audience and with a single slide here. Well done!
Topological magnetic monopoles
The experimental identification of topological magnetic monopoles, or hedgehogs, was published in Nature Nanotechnology. Outstanding experiments performed at COSMIC allowing for an unprecedented 10 nm resolution in the 3D-reconstructed magnetization vector of a frustrated metalattice. We were able to determine the textures’ topology directly from experimental results, identifying both hedgehogs in the bulk of the materials and “virtual” hedgehogs whose topology is bound to the material’s surfaces. For more information, see the research highlight in the STROBE website.
Ultrafast domain-wall motion depends on symmetry
Measurements done at European XFEL showed that femtosecond optical pulses affect magnetic domains depending on their symmetry: labyrinth domains are mobile while stripe domains are virtually fixed. This observation was achieved by measuring samples with mixed states and developing a new analysis technique for 2D scattering data. This is our second editors’ suggestion on ultrafast magnetization dynamics published in Phys. Rev. B 106, 224424 (2022). Outstanding work from all the team and especially Nanna Zhou Hagström!
Casey, Victoria, and Ally present at MLRD
All three presented posters on their research at the Mountain Lion Research Day. Ally was also nominated as Grad Top Scholar! Well done!
Ghanem presents at MMM
Ghanem presented his work “Generalized auto-oscillator model for arbitrary spin ices” at MMM in Minneapolis. Outstanding work presenting to experts in the field!
Domains move at picosecond timescales
Our investigation of ultrafast domain-wall dynamics has been published in Phys. Rev. B and selected as editor’s suggestion. By a thorough analysis of scattering data taken at LCLS, we were able to find both domain-wall broadening and a shift in the scattering peak position that is indicative that domains move upon optical perturbation at picosecond timescales. More details in our publication D. Zusin et al., Ultrafast domain dilation induced by optical pumping in ferromagnetic CoFe/Ni multilayers, Phys. Rev. B 106, 144422 (2022).
MHz-rate ultrafast dynamics at EU-XFEL
First results from the MHz-repetition-rate X-ray scattering experiments from the Spectroscopy and Coherent Scattering instrument were achieved by a team of international researchers. This technique will enable accurate analysis of collected X-ray ultrafast scattering data. More details at N. Zhou Hagström et al., MHz-rate ultrafast X-ray scattering and holographic imaging at the European XFEL, J. Synchrotron Rad. 29 (2022).
FRAMS 2022
We all attended FRAMS 2022 at the University of Wyoming. As usual, good to catch up with the front range community and interact with so many good scientist in magnetism. Very well done Ally, Kyle, and Victoria with their poster presentations!