Rahn, M. C., Kummer, K., Hariki, A., Ahn, K-H, Kunes, J., Amorese, A., Denlinger, J. D., Lu, D-H, Hashimoto, M., Rienks, E., Valvidares, M., Haslbeck, F., Byler, D. D., McClellan, K. J., Bauer, E. D., Zhu, J. X., Booth, C. H., Christianson, A. D., Lawrence, J. M., Ronning, F. and Janoschek, M. (2022). Kondo quasiparticle dynamics observed by resonant inelastic x-ray scattering. Nat. Commun., 13 (1). BERLIN: NATURE PORTFOLIO. ISSN 2041-1723

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Abstract

Effective models focused on pertinent low-energy degrees of freedom have substantially contributed to our qualitative understanding of quantum materials. An iconic example, the Kondo model, was key to demonstrating that the rich phase diagrams of correlated metals originate from the interplay of localized and itinerant electrons. Modern electronic structure calculations suggest that to achieve quantitative material-specific models, accurate consideration of the crystal field and spin-orbit interactions is imperative. This poses the question of how local high-energy degrees of freedom become incorporated into a collective electronic state. Here, we use resonant inelastic x-ray scattering (RIXS) on CePd3 to clarify the fate of all relevant energy scales. We find that even spin-orbit excited states acquire pronounced momentum-dependence at low temperature-the telltale sign of hybridization with the underlying metallic state. Our results demonstrate how localized electronic degrees of freedom endow correlated metals with new properties, which is critical for a microscopic understanding of superconducting, electronic nematic, and topological states.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Rahn, M. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kummer, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hariki, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ahn, K-HUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kunes, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Amorese, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Denlinger, J. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lu, D-HUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hashimoto, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rienks, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Valvidares, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Haslbeck, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Byler, D. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
McClellan, K. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bauer, E. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhu, J. X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Booth, C. H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Christianson, A. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lawrence, J. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ronning, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Janoschek, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-696517
DOI: 10.1038/s41467-022-33468-6
Journal or Publication Title: Nat. Commun.
Volume: 13
Number: 1
Date: 2022
Publisher: NATURE PORTFOLIO
Place of Publication: BERLIN
ISSN: 2041-1723
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
HEAVY; SUPERCONDUCTIVITY; EXCITATIONS; FERMIONS; SCALE; STATEMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/69651

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