Kondo resonance in PrTi2Al20: Photoemission spectroscopy and single-impurity Anderson model calculations

M. Matsunami, M. Taguchi, A. Chainani, R. Eguchi, M. Oura, A. Sakai, S. Nakatsuji, S. Shin

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The Kondo resonance at the Fermi level is well established for the electronic structure of Ce (4f1 electron) and Yb (4f1 hole) -based systems. In this work, we report complementary experimental and theoretical studies on the Kondo resonance in the Pr-based 4f2 system, PrTi2Al20. Using Pr 3d-4f resonant photoemission spectroscopy and single-impurity Anderson model (SIAM) calculations including the full multiplets of Pr ions, we show that a 4f2 system can also give rise to a Kondo resonance at the Fermi level. The Kondo resonance peak is experimentally observed through a final-state multiplet-dependent resonance and is reproduced with properly tuned hybridization strength in SIAM calculations.

Original languageEnglish
Article number193101
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number19
Publication statusPublished - Nov 7 2011


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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