Photoemission spectra and their resonant behavior at the 5d core threshold were measured with synchrotron radiation. 5f derived features were observed close to the Fermi level as well as at 2.0(1.89) eV for U3P4(U3As4). An additional peak was observed around 5.5 eV for U3As4. This structure seems to correspond to the p-f bonding states in Ce monopnictides.
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