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Localized Character of 4f Electrons in CeRh$_x$(x=2,3) and CeNi$_x$(x=2,5) | Ran-Ju Jung
; Byung-Hee Choi
; Hyeong-Do Kim
; S.-J. Oh
; En-Jin Cho
; T. Iwasaki
; A. Sekiyama
; S. Imada
; S. Suga
; J.-G. Park
; | Date: |
14 Dec 2002 | Subject: | Strongly Correlated Electrons | cond-mat.str-el | Abstract: | We have measured Ce 4f spectral weights of extremely $alpha$-like Ce-transition metal intermetallic compounds CeRh$_x$ (x=2,3) and CeNi$_x$ (x=2,5) by using the {it bulk-sensitive} resonant photoemission technique at the Ce $M_5$($3d_{5/2} o4f$)-edge. Unprecedentedly high energy resolution and longer escape depth of photoemitted electron at this photon energy enabled us to distinguish the sharp Kondo resonance tails at the Fermi level, which can be well described by the Gunnarsson-Schönhammer(GS) calculation based on the Anderson Impurity Hamiltonian. On the other hand, the itinerant 4f band description shows big discrepancies, which implies that Ce 4f electrons retain localized characters even in extremely $alpha$-like compounds. | Source: | arXiv, cond-mat/0301209 | Services: | Forum | Review | PDF | Favorites |
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