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Resonant inelastic X-ray scattering in single-crystal superconducting PrFeAsO$$_{0.7}$$

Jarrige, I.; Ishii, Kenji; Yoshida, Masahiro; Fukuda, Tatsuo  ; Ikeuchi, Kazuhiko*; Ishikado, Motoyuki*; Hiraoka, Nozomu*; Tsuei, K.-D.*; Kito, Hijiri*; Iyo, Akira*; Eisaki, Hiroshi*; Shamoto, Shinichi  

Resonant inelastic X-ray scattering (RIXS) spectra at the Fe K-edge were measured for a single-crystal of the iron oxypnictide superconductor PrFeAsO$$_{0.7}$$ ($$T_{rm C}$$ = 42 K). They disclose a weak, broad feature centered around 4.5 eV energy loss, which is slightly resonantly enhanced when the incident energy is tuned to the vicinity of the $$4p$$ white line. We tentatively ascribe it to the charge-transfer excitation between As $$4p$$ and Fe $$3d$$.

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Category:Physics, Applied

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