We report the discovery of a nearly-free electronlike resonant state for a ?-Si3N4(0001)-8×8 layer grown on Si(111), as observed by angle-resolved photoemission and scanning tunneling spectroscopy. Comparison with measurements performed on a Si(111)-7×7 surface helped us in the identification of the band. It is found that this parabolic state is degenerate with surface projected bulk bands of the Si(111) substrate.
Nearly-free electronlike surface resonance of a beta-Si3N4(0001)/Si(111)-8 × 8 interface
R Flammini;P Allegrini;F Ronci;S Colonna;D M Trucchi;F Filippone;P M Sheverdyaeva;P Moras
2015
Abstract
We report the discovery of a nearly-free electronlike resonant state for a ?-Si3N4(0001)-8×8 layer grown on Si(111), as observed by angle-resolved photoemission and scanning tunneling spectroscopy. Comparison with measurements performed on a Si(111)-7×7 surface helped us in the identification of the band. It is found that this parabolic state is degenerate with surface projected bulk bands of the Si(111) substrate.File in questo prodotto:
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