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 language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Sep 29 2009|