Photoemission spectroscopy of a Mn12 molecular magnet

Core-level and valence-band photoemission spectroscopy (PES) measurements have been performed on a Mn12 molecular magnet. Both the C and the O 1s spectra exhibit multiple-peak structures, which reflect the different chemical environments for the different C and O sites in Mn12. The Mn 2p spectrum of Mn12 is very similar to that of La_0.7Sr_0.3MnO₃ (LSMO), suggesting that the valence states of Mn ions in Mn12 are close to those in LSMO. The valence-band spectrum of Mn12 reveals that the Mn 3d states are located near the top of the valence band, which is consistent with the calculated local density of states.