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Evidence of momentum dependent hybridization in Ce2Co0.8Si3.2

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arxiv 1404.7003 v1 pith:VPOQAF2W submitted 2014-04-28 cond-mat.str-el

Evidence of momentum dependent hybridization in Ce2Co0.8Si3.2

P. Starowicz , R. Kurleto , J. Goraus , H. Schwab , M. Szlawska , F. Forster , A. Szytula , I. Vobornik
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D. Kaczorowski F. Reinert
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classification cond-mat.str-el
keywords ce2co0kondobandshybridizationangle-resolvedanisotropicarpesassociated
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We studied the electronic structure of the Kondo lattice system Ce2Co0.8Si3.2 by angle-resolved photoemission spectroscopy (ARPES). The spectra obtained below the coherence temperature consist of a Kondo resonance, its spin-orbit partner and a number of dispersing bands. The quasiparticle weight related to the Kondo peak depends strongly on Fermi vectors associated with bulk bands. This indicates a highly anisotropic hybridization between conduction band and 4f electrons - V_{cf} in Ce2Co0.8Si3.2.

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