Adatom bonding effects from coverage‐dependent angle‐resolved photoemission: Ag(001)+Cl

摘要: Adatom–adatom interactions and adatom–substrate bonding effects have been studied using coverage‐dependent angle‐resolved photoemission. Spectra for eight separate coverages, ranging from the clean Ag(001) surface to saturated c (2×2) ordered chlorine overlayer at ϑ=0.5, were obtained a multiple‐angle parallel detection system, allowing simultaneous collection of photoelectron emission into 70°×70° solid angle, while maintaining ∠1.5° angular resolution. The character k‐space origin photoemission peaks determined by comparison with direct transition model calculated bulk energy bands. This information was correlated attenuation substrate identify participation 5s, 5p, 4d levels in chemisorption bond. measured dispersion adsorbate induced structure provides on or antibonding nature these levels. k‐dependence Ag 4d‐band indicat...