Soft and hard x-ray orbital-resolved photoemission study of a strongly correlated Cd-Ce quasicrystal approximant
Phys. Rev. B 113, 205147 – Published 26 May, 2026
DOI: https://doi.org/10.1103/4bz3-ccqt
Abstract
We have investigated the orbital-dependent electronic states of , a prototype of strongly correlated rare-earth-based Tsai-type quasicrystals and approximants (ACs) by soft and hard x-ray photoemission spectroscopy. Our results reveal that the orbitals are predominantly hybridized with the valence-band electrons far from the Fermi level (), in sharp contrast to the hybridization with conduction electrons at seen for the intermetallic Ce-based compounds. This anomalous hybridization should be taken into account in discussing the unresolved magnetic ground state in . These findings suggest that Cd-based ACs, some of which show the multistep magnetic transitions, could provide a new platform for investigating novel magnetic properties that cannot be understood within the conventional framework of hybridization at .