Interplay between strongly localized Eu 4f and weakly localized Nb 4d electrons 
in Eu3Nb5O15

Nakamura, R.; Takegami, D.; Melendez-Sans, A.; Tjeng, L. H.; Miyoshino, T.; Iwamoto, K.; Sekino, W.; Yoshimura, M.; Tsuei, K.-D.; Katsufuji, T.; Mizokawa, T.

doi:10.1103/PhysRevB.109.165148

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Interplay between strongly localized Eu 4f and weakly localized Nb 4d electrons in Eu₃Nb₅O₁₅

MPS-Authors

/persons/resource/persons212985

Takegami, D.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons243645

Melendez-Sans, A.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126881

Tjeng, L. H.
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Nakamura, R., Takegami, D., Melendez-Sans, A., Tjeng, L. H., Miyoshino, T., Iwamoto, K., et al. (2024). Interplay between strongly localized Eu 4f and weakly localized Nb 4d electrons in Eu₃Nb₅O₁₅. Physical Review B, 109: 165148, pp. 165148-1-165148-6. doi:10.1103/PhysRevB.109.165148.

Cite as: https://hdl.handle.net/21.11116/0000-000F-6A72-A

Abstract

We investigated the electronic structure of BaEu2Nb5O15 and Eu3Nb5O15 by means of hard x-ray photoelectron spectroscopy. The Eu 3d core level spectra are primarily dominated by Eu2+ signals. The well-screened feature in the Nb 3d core level spectra of BaEu2Nb5O15 is suppressed in Eu3Nb5O15, consistent with the insulating behavior of Eu3Nb5O15 due to the atomic disorder and/or the rattling effect of the small Eu ions in the spacious A2 site. In the valence band spectra, the Nb 4d states at the Fermi level are close to the Eu 4f states located around 2 eV below it. This suggests that the degree of localization of the Nb 4d electrons can be enhanced through the Eu 4f-Nb 4d hybridization with the atomically and magnetically disordered Eu ions at the A2 site. © 2024 American Physical Society.