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Physical Review B
The interface reflectivity in the Mg/W͑110͒ metallic quantum well is determined from line-shape analysis of high-resolution photoemission spectra. Moreover, a quick reflectivity drop is found away from projected band gaps of the appropriate symmetry near E F , such that the interface reflectivity overcomes the bulklike quasiparticle lifetime as the dominant line broadening mechanism at the Fermi energy. A nearly-free-electron model calculation for the W͑110͒ substrate band structuredoi:10.1103/physrevb.79.033410 fatcat:dv5axivsvza7zgxembnb5djn7u