Itinerant to relocalized transition of f electrons in the Kondo insulator CeRu4Sn6

Abstract

The three-dimensional electronic structure and the nature of Ce 4f electrons of the Kondo insulator CeRu4Sn6 are investigated by angle-resolved photoemission spectroscopy, utilizing tunable photon energies. Our results reveal (i) the three-dimensional k-space nature of the Fermi surface, (ii) the localized-to-itinerant transition of f electrons occurs at a much high temperature than the hybridization gap opening temperature, and (iii) the "relocalization" of itinerant f electrons below 25 K, which could be the precursor to the establishment of magnetic order.

6 pages, 4 figures

References in corpus (12)

• Correlated Topological Insulators with Mixed Valence
• Direct observation of the spin texture in strongly correlated SmB6 as evidence of the topological Kondo insulator
• Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB${}_6$
• Long range order and two-fluid behavior in heavy electron materials
• The electronic structure of CeCoIn5 from angle-resolved photoemission spectroscopy II: Hybridization effects
• Direct observation of quasi-particle band in CeIrIn${}_5$: Angle-resolved photoemission spectroscopy study
• Anisotropic c-f hybridization in the ferromagnetic quantum critical metal CeRh${}_6$Ge${}_4$
• Angle-resolved photoemission spectroscopy of perovskite-type transition-metal oxides and their analyses using tight-binding band structure
• Electronic structure and 4f-electron character in Ce2PdIn8 studied by angle-resolved photoemission spectroscopy
• Pristine quantum criticality in a Kondo semimetal
• ARPES signature of the competition between magnetic order and Kondo effect in CeCoGe3
• 4/-hybridization strength in CemMnIn3m+2n heavy-fermion compounds studied by Angle-Resolved Photoemission Spectroscopy

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• Ultrafast Stiffening of the Lattice Potential and Metastable State Formation in 1$T$-TiSe${}_2$