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4f band structure and Fermi surfaces of CeIrSi$$_3$$ by soft X-ray angle-resolved resonant photoemission spectroscopy

Okochi, Takuo; Yasui, Akira; Takeda, Yukiharu  ; Okane, Tetsuo ; Saito, Yuji ; Fujimori, Atsushi*; Yamagami, Hiroshi; Miyauchi, Yuichiro*; Okuda, Yusuke*; Settai, Rikio*; Onuki, Yoshichika*

We have investigated the bulk 4$$f$$ electronic structure of the non-centrosymmetric superconductor, CeIrSi$$_3$$ by soft X-ray angle-resolved photoemission spectroscopy. We have performed the angle-resolved 3$$d$$-4$$f$$ resonant photoemission and the comparison of the angle-resolved photoemission spectra of CeIrSi$$_3$$ with those of non-$$f$$ reference compound, LaIrSi$$_3$$ and revealed that the 4$$f$$ states of CeIrSi$$_3$$ well hybridized with the non-$$f$$ conduction bands.



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