Alannah Hallas

Condensed Matter; Experimental studies of quantum materials, crystal growth, neutron scattering, muon spin relaxation; Design and crystal growth of new quantum materials, Structural and magnetic properties of high entropy oxides, Magnetic frustration in the local to itinerant crossover, Multipolar interactions in rare earth magnets, Topological semimetals with strong spin-orbit coupling; Design and crystal growth of quantum materials; Our group is focused on the design and discovery of new quantum materials using a broad range of crystal growth techniques, including metallic flux, vapour transport, high-pressure synthesis, and floating zone growth. We are particularly interested in establishing structure-function relationships in quantum materials via characterization of their structural, magnetic, and electronic behaviours in order to facilitate the targeted design of materials with novel or useful properties. This research is performed in our state-of-the-art crystal growth laboratories at the Quantum Matter Institute as well as international neutron scattering and muon spin relaxation user facilities.

[2024] Effect of high pressure synthesis conditions on the formation of high entropy oxides. https://doi.org/10.1063/5.0201964 [Aamlid, Kim, González-Rivas, Oudah, Takagi, and Hallas. Applied Physics Letters 125, 021901 (2024)]. [2023] Phase stability of entropy stabilized oxides with the α-PbO2 structure. https://doi.org/10.1038/s43246-023-00372-5 [Aamlid, Johnstone, Mugiraneza, Oudah, Rottler, and Hallas. Communications Materials 4, 45 (2023)]. [2023] Understanding the role of entropy in high entropy oxides. https://pubs.acs.org/doi/abs/10.1021/jacs.2c11608 [Aamlid, Oudah, Rottler, and Hallas. Journal of the American Chemical Society 145 (11), 5991-6006 (2023)].