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arXiv · 1711.11177

Kondo lattice excitation observed using resonant inelastic X-ray scattering at the Yb $M_5$ edge

Jason N. Hancock·Maxim Dzero·John Sarrao·Thorsten Schmitt·Vladimir N. Strocov·Marco Guarise·Marco Grioni
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Abstract

We present a study of the resonant inelastic scattering response of \ybin\ excited at the tender Yb $M_5$ 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 $T_v\sim$ 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.

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Jason N. Hancock, Maxim Dzero, John Sarrao, Thorsten Schmitt, Vladimir N. Strocov, Marco Guarise, Marco Grioni. 2017-12-05. Kondo lattice excitation observed using resonant inelastic X-ray scattering at the Yb $M_5$ edge. https://doi.org/10.1103/physrevb.98.075158

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