Jul, 2003
Soft x-ray energy-dependent angle-resolved photoemission study of CeIrIn5
JOURNAL OF PHYSICS-CONDENSED MATTER
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- Volume
- 15
- Number
- 28
- First page
- S2149
- Last page
- S2152
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1088/0953-8984/15/28/340
- Publisher
- IOP PUBLISHING LTD
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 GammaMZA plane. The non-dispersive band designated as the Cc 4f(7/2)(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 Gamma (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 k(z) 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.
- Link information
- ID information
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- DOI : 10.1088/0953-8984/15/28/340
- ISSN : 0953-8984
- Web of Science ID : WOS:000184563300042