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Resonant inelastic x-ray scattering in single-crystal superconducting PrFeAsO0.7

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arxiv 0910.1423 v1 pith:L3ANSJAP submitted 2009-10-08 cond-mat.str-el cond-mat.supr-con

classification cond-mat.str-elcond-mat.supr-con
keywords energyinelasticprfeaso0resonantscatteringx-rayaroundascribe
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Resonant inelastic x-ray scattering (RIXS) spectra at the Fe K-edge were measured for a single crystal of the iron oxypnictide superconductor PrFeAsO0.7 (Tc=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 in 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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