Soft x-ray energy-dependent angle-resolved photoemission study of CeIrIn5

T. Ito, P. A. Rayjada, N. Kamakura, Y. Takata, Takayoshi Yokoya, A. Chainani, S. Shin, Minoru Nohara, H. Takagi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Soft x-ray energy-dependent angle-resolved photoemission measurements are performed on the heavy-fermion superconductor CeIrIn5 to study the Fermi surface (FS) and the electronic structure near the Fermi level in the ΓMZA plane. The non-dispersive band designated as the Ce 4f7/2 1 final state is found at 280 meV along with the main body of the valence band consisting of highly dispersive In 5p bands, which are in good qualitative agreement with the band structure calculation based on the itinerant 4f electron model. Furthermore, we found two electron-like and one hole-like cylindrical FSs at the M (A) and Γ (Z) points. The Fermi momenta of the observed FSs are consistent with the de Haas-van Alphen experiment, while they contradict the stronger anisotropy of the FS along the kz direction predicted by the band calculation. The results suggest stronger two-dimensionality of the electronic structure of CeIrIn5 and point to the need for its theoretical verification.

Original languageEnglish
JournalJournal of Physics Condensed Matter
Volume15
Issue number28
DOIs
Publication statusPublished - Jul 23 2003
Externally publishedYes

Fingerprint

Fermi surface
Photoemission
Electronic structure
photoelectric emission
Heavy fermion superconductors
X rays
Electrons
Valence bands
Fermi level
Band structure
Momentum
Anisotropy
x rays
Fermi surfaces
energy
electronic structure
heavy fermion superconductors
Experiments
electrons
valence

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Soft x-ray energy-dependent angle-resolved photoemission study of CeIrIn5 . / Ito, T.; Rayjada, P. A.; Kamakura, N.; Takata, Y.; Yokoya, Takayoshi; Chainani, A.; Shin, S.; Nohara, Minoru; Takagi, H.

In: Journal of Physics Condensed Matter, Vol. 15, No. 28, 23.07.2003.

Research output: Contribution to journalArticle

Ito, T. ; Rayjada, P. A. ; Kamakura, N. ; Takata, Y. ; Yokoya, Takayoshi ; Chainani, A. ; Shin, S. ; Nohara, Minoru ; Takagi, H. / Soft x-ray energy-dependent angle-resolved photoemission study of CeIrIn5 In: Journal of Physics Condensed Matter. 2003 ; Vol. 15, No. 28.
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AU - Shin, S.

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