High-resolution photoemission study of CeRu2: The dual character of 4f electrons

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概要

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• High-resolution low-temperature photoemission spectroscopy was performed for CeRu2 to study the nature of low-lying excitations around the Fermi level (EF). It was found that the photoemission spectrum near EF shows two well-resolved peaks at and about 270 meV below EF, which are ascribed to the tail of the Ce 4 f1 final state located just above EF and its spin-orbit satellite (ΔSO∼270 meV), respectively. This suggests that the many-body-correlation effect is necessary for understanding the electronic structure near EF of CeRu2, although the Ce 4f electron exhibits a substantially itinerant character through the strong hybridization with the conduction electrons.

• American Physical Societyの論文

著者

• Chainani A

  Tohoku Univ. Sendai Jpn

• Kumigashira H

  Tohoku Univ. Sendai Jpn

関連論文

• High-Resolution Photoemission Study of UNi_2Al_3 and URu_2Si_2
• High-resolution photoemission study of CeRu2: The dual character of 4f electrons
• Ultrahigh-Resolution Photoemission Study of Kondo Insulators CeRhAs and CeRhSb

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