2025/07/15 by E. F. Bavaro, Bavaro, E. F., José Adílson de Castro +7
Engineering · Materials Science · Physics and Astronomy · #Advanced Materials Characterization Techniques #FOS: Physical sciences #Quasicrystal Structures and Properties #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el)
paper · pdf · doi:10.48550/arxiv.2507.11791
openalex publication_date 2025/07/15 · openalex created_date 2025/10/09 · openalex updated_date 2026/07/28
We report a study of de Haas-van Alphen oscillations in high-quality single crystals of cubic β-PtBi2. In combination with density functional theory calculations, we identify quantum oscillations associated with all Fermi surface sheets predicted by theory. Our results uncover three small electron pockets centered on a sixfold band-touching point located approximately 25 meV below the Fermi level at the R point of the Brillouin zone. These findings firmly establish the presence of sixfold fermions in close proximity to the Fermi energy of β-PtBi2.