Off-gap interface reflectivity of electron waves in Fabry-Pérot resonators

F. Schiller, A. Leonardo, E. V. Chulkov, P. M. Echenique, J. E. Ortega
2009 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 structure
more » ... ructure demonstrates that coherent wave-function scattering is the relevant mechanism that determines the interface reflectivity in the resonator.
doi:10.1103/physrevb.79.033410 fatcat:dv5axivsvza7zgxembnb5djn7u