Off-gap interface reflectivity of electron waves in Fabry-Pérot resonators
Abstract
The interface reflectivity in the Mg/W(110) 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 EF , 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 W(110) substrate band structure demonstrates that coherent wave-function scattering is the relevant mechanism that determines the interface reflectivity in the resonator.
- Publication:
-
Physical Review B
- Pub Date:
- January 2009
- DOI:
- 10.1103/PhysRevB.79.033410
- Bibcode:
- 2009PhRvB..79c3410S
- Keywords:
-
- 73.21.-b;
- 79.60.-i;
- 73.50.Gr;
- Electron states and collective excitations in multilayers quantum wells mesoscopic and nanoscale systems;
- Photoemission and photoelectron spectra;
- Charge carriers: generation recombination lifetime trapping mean free paths