A resonant photoemission study of La 4f-states in the LaMn 2 Si 2 intermetallic compound

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intermetallic compound is investigated by means of valence band resonant photoemission spectroscopy at the La 4d-4f, 3d-4f, 3p-5d and Mn 2p-3d thresholds. To investigate the La 4f-states we tuned the photon energy towards the 3d-4f, 4d-4f absorption thresholds, which leads to the resonant enhancement of the photoemission intensity from the 4f-shell. The electronic structure calculations within density functional theory are found to be in good agreement with the experimental spectra and similarly demonstrate the presence of La 4f- and Mn 3d-states in these compounds.