Resonant inelastic x-ray scattering in electronically quasi-zero- dimensional CuB2 O4

J. N. Hancock, G. Chabot-Couture, Y. Li, G. A. Petrakovskiǐ, K. Ishii, I. Jarrige, J. Mizuki, T. P. Devereaux, M. Greven

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We present a resonant inelastic scattering (RIXS) study using of CuB 2 O4, which contains a lattice of CuO4 plaquettes electronically isolated by B+3 ions. The observed CuK -edge spectra show a small number of well-separated features, and the simple electronic structure of CuB2 O4 allows us to explore RIXS phenomenology. We find a low-energy feature that cannot be attributed to the same charge-transfer excitation discussed in other cuprates and is likely a d→d transition thought to be forbidden under common considerations of K -edge RIXS.

Original languageEnglish (US)
Article number092509
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
StatePublished - Sep 29 2009

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