Hybridized and Localized 4f Electronic States of Nd-based Intermetallic Compounds in Cubic Symmetry Probed by High-Energy Photoemission

2025/05/20 by M. Sakaguchi, Sakaguchi, M., Ayame Enomoto +45
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Metallurgical and Alloy Processes #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el)

paper · pdf · doi:10.48550/arxiv.2505.13999

openalex publication_date 2025/05/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We have performed soft and hard X-ray photoemission spectroscopies on NdTi2Al20 and NdBe13 which show antiferromagnetic ordering at low temperatures. The Nd 3d core-level photoemission and Nd 3d-4f valence-band resonant photoemission spectra show finite 4f4 initial-state components in addition to the 4f3 configurations attributed to the c-f hybridization effects in NdTi2Al20, while the 4f3 initial-state components with localized character are dominant in NdBe13. These results imply the emergence of overscreening channel due to the two-channel Kondo effect in NdTi2Al20 through the the strong c-f hybridization effect.

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