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

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

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

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 4f7/21 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.

原文English
頁(從 - 到)S2149-S2152
期刊Journal of Physics Condensed Matter
15
發行號28
DOIs
出版狀態Published - 2003 七月 23

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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