Spectrally sharp magnetic excitations above the critical temperature in a frustrated Weyl semimetal.

ABSTRACT: The rare-earth α-pyrochlore iridates are a prospective class of conducting frustrated magnets where electronic correlations, large spin-orbit coupling, and geometrical frustration interplay, leading to a rich set of magnetic and electronic phases. Despite their intriguing properties, the magnetic order and excitations in this fundamental class of topological quantum materials remain poorly understood due to challenges in growing large single crystals and insufficient microscopic information on their temperature-dependent phases. Here, by combining state-of-the-art thin-film synthesis, resonant elastic and inelastic X-ray scattering, spin wave analysis, and dynamical spin susceptibility calculations, we unequivocally reveal the presence of spectrally sharp, gapped magnetic excitations in Y<

SUBMITTER: Terilli M 

PROVIDER: S-EPMC12271449 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature