Year: 2025
Type: article
Abstract: Magnetic materials that allow for the mapping of all Fermi surfaces to fully capture the interplay between magnetism and electronic structure are rare. The authors elucidate here the fermiology of antiferromagnetic EuAg${}_{4}$Sb${}_{2}$ through quantum oscillations, capturing full sets of spin-split Fermi pockets in the polarized ferromagnetic state. These results show good agreement with first-principles calculations and ARPES data. Temperature-dependent changes in the size and shape of the small hourglass pockets, but not the large ones, highlight that variations in exchange splitting, driven by changes in magnetic moment, primarily affect the small pockets without significantly altering the overall electronic structure in this compound.
Language: Latvian
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: U.S. Department of Energy
OpenAlex ID: W4407741252