Mechanism for reversed photoemission core-level shifts of oxidized Ag

Photoemission core-level shifts reveal the thiolate-Au(111) interface

The nature of the thiolate/Au 111 interface is a long-standing puzzle. It has been suggested that thiolates drive surface reconstruction, however, a consensus regarding the adsorption configuration is missing. Herein, the density-functional theory is used to evaluate surface core-level shifts SCLSs for methyl thiolates on Au 111 assuming a representative set of different surface reconstructions...

Core-level photoemission study of Ga12xMnxAs

We have studied the electronic structure of Mn impurities in GaAs by Mn 2p core-level photoemission spectroscopy. From cluster-model analysis assuming the neutral (Mn) or negatively ionized (Mn) ground state, electronic structure parameters have been obtained. In either case, the Mn d electron number is evaluated to be ;5 using the obtained parameters, meaning that the neutral Mn impurity, if i...

Local methylthiolate adsorption geometry on Au(111) from photoemission core-level shifts.

The local adsorption structure of methylthiolate in the ordered Au(111)-(sqrt[3]xsqrt[3])R30 degrees phase has been investigated using core-level-shift measurements of the surface and bulk components of the Au 4f(7/2) photoelectron binding energy. The amplitude ratio of the core-level-shift components associated with surface Au atoms that are, and are not, bonded to the thiolate is found to be ...

Surface core-level shifts for simple metals.

Origin of metallic surface core-level shifts.