The Mg 2pcore-level in Zn₂Mg

We present a synchrotron radiation photoemission (PE) spectroscopy study of the Mg 2p shallow core-level in Zn2Mg Laves phase. The PE measurements were performed on in situ cleaved single-grain samples at 10(-10) mbar pressure and low, 90-100 K, temperature. Analysis of Mg 2p PE spectra indicates the surface shift of the core-level of -0.12 eV. Parameters of the bulk component of Mg 2p level, the binding energy of 49.98 eV, the spin-orbit splitting Delta(s-o) = 0.28 eV, and the lifetime broadening gamma = 0.06 eV, are comparable to their values determined previously for pure crystalline Mg.