A high resolution photoemission study of surface core-level shifts in clean and oxygen-covered Ir(2 1 0) surfaces

Deoxygenation of IrO2(110) surface: Core-level spectroscopy and density functional theory calculation

“…When the reduction temperature is raised to 493 K, the Ir metal layer grows deeper. The binding energy of Ir 0 bulk component shifts to 61.0 eV, which is the binding energy value of Ir-4f 7/2 line reported in the previous CLS works on Ir metal single crystal [20,21]. Fig.…”

“…In view of the evidently separable bulk and surface components in Fig. 3e and the narrow linewidth of the 61.2 eV bulk feature, the Ir 0 -4f 7/2 profile is fitted with a Lorentzian linewidth of 300 meV for the bulk and the surface components [20]. The 61.2 eV bulk feature is regarded as the binding energy of an Ir metal layer on the IrO 2 crystal in the shallow probing depth.…”

The adsorption and stability of sulfur containing amino acids on Cu{531}

“…Either a variety of L-alaninate orientations are present on the surface under the influence of the sulfur adatoms still bonded to {1 1 0} and {3 1 1} microfacets or the sulfur atoms cause a reconstruction of the surface which may be as significant as large faceting. The latter phenomenon has been observed for adsorbates on Cu and other metal surfaces ( [21,[49][50][51][52][53] and references therein]) however further studies are needed to ascertain which of these possibilities are correct.…”

Oxygen-induced nano-faceting of Ir(210)

“…The results of our detailed investigations of the photoemission and surface chemistry experiments are reported elsewhere [31,32], and here we only summarize the main conclusions. Photoemission experiments carried out in this research effort were focused on studying the shallow 4f core level electronic states of iridium.…”