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

M. Sakaguchi; A. Enomoto; H. Fujiwara; G. Nozue; S. Hamamoto; Y. Torii; T. D. Nakamura; N. U. Sakamoto; K. Yamagami; T. Kiss; Y. Kanai-Nakata; S. Imada; A. Irizawa; A. Yamasaki; A. Higashiya; M. Oura; K. Tamasaku; M. Yabashi; T. Ishikawa; H. Sugawara; H. Amitsuka; T. Yanagisawa; H. Hidaka; A. Sekiyama

arXiv · 2505.13999

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

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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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M. Sakaguchi, A. Enomoto, H. Fujiwara, G. Nozue, S. Hamamoto, Y. Torii, T. D. Nakamura, N. U. Sakamoto, K. Yamagami, T. Kiss, Y. Kanai-Nakata, S. Imada, A. Irizawa, A. Yamasaki, A. Higashiya, M. Oura, K. Tamasaku, M. Yabashi, T. Ishikawa, H. Sugawara, H. Amitsuka, T. Yanagisawa, H. Hidaka, A. Sekiyama. 2025-05-20. Hybridized and Localized 4f Electronic States of Nd-based Intermetallic Compounds in Cubic Symmetry Probed by High-Energy Photoemission. https://arxiv.org/abs/2505.13999

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