Extreme Ultraviolet Photoelectron Spectra of Manganese Phosphide

The valence band photoelectron spectra of MnP crystals have been measured over the range of excitation energy from 40 to 130 eV using synchrotron radiation. The spectra consist of strong bands ascribable to the Mn 3 d bands and weak structures ascribable to the P 3 s band and the bonding bands of Mn 3 d and P 3 p electrons. Sharp Fermi edge is found in the Mn 3 d band; the consequence is that Mn 3 d electrons are itinerant. The spectral band shape is consistent with the results of energy band calculation reported recently. Resonance enhancement of the photoemission intensity accompanied by the growth of two additional band is found for excitation energies above the threshold of Mn 3 p excitation. The possible origin of this enhancement is discussed.