Resonant inelastic x-ray scattering (RIXS) measurements performed jointly across the M-2,M-3 and L-3 absorption thresholds are used to study CoO local electronic structure and are supported by model calculations. The high-resolution experimental data provide a precise set of parameters to describe the correlated response of valence electrons. The same core-hole independent set of parameters within the single impurity Anderson model is used to describe both the M (3p-3d) and L (2p-3d) resonances. This work shows that combining M and L scattering data provides an enhanced contrast view of the spectral weights. Measured M-2,M-3-RIXS spectra are observed to be free of charge-transfer or normal fluorescence contributions. Moreover the cross section of M-RIXS final states with change in spin multiplicity is low. Combining this information with L-edge studies establishes an appealing means of making a better separation between on-site and intersite (ligand to metal) electronic excitations. Experimental and theoretical features specific to RIXS studies performed at M and L edges are summarized as a basis for future studies on complex transition metal compounds.
Combining M- and L-edge resonant inelastic x-ray scattering for studies of 3d transition metal compounds
Ghiringhelli G;
2008
Abstract
Resonant inelastic x-ray scattering (RIXS) measurements performed jointly across the M-2,M-3 and L-3 absorption thresholds are used to study CoO local electronic structure and are supported by model calculations. The high-resolution experimental data provide a precise set of parameters to describe the correlated response of valence electrons. The same core-hole independent set of parameters within the single impurity Anderson model is used to describe both the M (3p-3d) and L (2p-3d) resonances. This work shows that combining M and L scattering data provides an enhanced contrast view of the spectral weights. Measured M-2,M-3-RIXS spectra are observed to be free of charge-transfer or normal fluorescence contributions. Moreover the cross section of M-RIXS final states with change in spin multiplicity is low. Combining this information with L-edge studies establishes an appealing means of making a better separation between on-site and intersite (ligand to metal) electronic excitations. Experimental and theoretical features specific to RIXS studies performed at M and L edges are summarized as a basis for future studies on complex transition metal compounds.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
