Kondo lattice excitation observed using resonant inelastic x-ray scattering at the YbM5 edge

Article

关键词: VALENCE TRANSITION;    PHASE-TRANSITION;    HIDDEN ORDER;    YBINCU4;   

DOI  :  10.1103/PhysRevB.98.075158

来源: SCIE

【 摘 要 】

We present a study of the resonant inelastic scattering response of YbInCu4 excited at the tender YbM5 x-ray edge. In the high-temperature, paramagnetic phase, we observe a multiplet structure which can be understood at an ionic level. Upon cooling through the valence transition at T-v similar to 40 K, we observe a strong renormalization of the low-energy spectra, indicating a sensitivity to the formation of an intermediate valence phase at low temperatures. Similar spectrum renormalization has been observed in the optical conductivity, which suggests that the low-energy electronic structure possesses both mixed conduction and localized character.

【 授权许可】

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