Experimental study of the growth and dissolution of Re/W(110) by core level photoemission spectroscopy: formation of a surface alloy

摘要: We present here an experimental study of the growth Re/W(110). Auger electron spectroscopy, core level photoelectron spectroscopy and LEED experiments at T = 500 K as a function Re coverage θ show first (θ < 0.5 ML) surface reconstruction followed ≈ 1 by formation two-layer alloy which is then buried additional Re-layers 3 ML). An empirical model developed to simulate mode. The main effect annealing increase number Re-enriched layers. establishment over several atomic layers introduces new idea local equilibrium. Finally, extension non equilibrium situations usual thermodynamical Born-Haber cycle allowed us derive from KTBIM time-evolution W4f spectra shifts in good agreement with data.