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The homoepitaxial growth of Cu on Cu(0 0 1) has been investigated with low-energy electron microscopy (LEEM). The temporal evolution of engineered pyramid-like structures has been monitored for a range of incident Cu fluxes and substrate temperatures. The step velocities have been analyzed in the framework of a novel growth model that contains as the only adjustable parameter the height of the Ehrlich–Schwoebel (ES) barrier. The simultaneous description of all step velocities observed within the flux and temperature range covered by our experiments determines the height of the ES barrier to about 125 meV in this system.

Synchrotron radiation tuned to the Fe 3p–3d transition (hv = 56eV) was used to study Fano type resonant photoemission spectra for a clean CdTe(110) surface sequentially covered in the monolayer (ML) range by Fe atoms and annealed. The results showed that, in the first stage of the deposition, the Fe atoms are mainly involved in the creation of a Cd1−xFexTe ternary crystal (0.2–0.6 ML). At higher coverages (1.2 ML), the contribution of Fe metallic islands becomes visible. CdTe dissociation in the surface region leads to the appearance of Cd Fe interaction at higher Fe deposition (3.6 ML). After deposition of 20 ML, sample annealing in the 300°C range leads to Fe diffusion into the crystal and the measured spectra correspond well to the Cd1−xFexTe calculated spectra.

Valence band of Cd 1-x Fe x Se/Fe in resonant photoemission spectra Resonant photoemission spectra of Fe atoms (3p-3d) were measured for freshly cleaved Cd 0-86 Fe 0.14 Se crystal (110) surface and for the same surface with sequentially deposited Fe atoms in the range 0.3-80 ML. The synchrotron radiation (LURE, Orsay, France) was used to measure valence band density of state distributions and Cd 4d core level for the radiation energy range 50-60 eV, which includes the Fe 3p-3d resonant energy equal to 56 eV. At the lowest stages of Fe atom deposition (up to about 3 ML), Fe atoms replace Cd atoms in the crystal, making a Cd 1-x Fe x Se alloy with a higher x and leaving extra Cd as small islands or clusters. For the next stages of Fe deposition (about 3-10 ML) the dissociated Cd atoms create a Cd-Fe alloy. At higher stages of Fe deposition (above about 10 ML) a Fe thin film is formed.