Inverse corrugation and corrugation enhancement of Pb superstructures on Cu(111) and (110)

Orbital selective overlayer-substrate hybridization in a Pb monolayer on Ag(111)

“…A qualitatively similar result has been obtained for a Pb overlayer on Cu͑111͒. 21 For the Pb/ Cu͑111͒ system, the Pb overlayer induced modulation of the substrate surface has been proposed to be related to the surface-active role of Pb. Due to the peculiar atom positions this is referred to as inverse corrugation, which results in a reduced buckling of the Pb overlayer.…”

Pattern organization on Cu(111) in perchlorate solutions

“…3 featuring a closepacked hexagonal structure and a Moiré pattern. This structure is identical to that observed in STM experiments in uhv at room temperature [8,9]. Fig.…”

“…The (4 · 4) Moiré unit cell is easily distinguished as it is marked by darker atoms (every fourth atom) within the hexagonal close-packed Pb layer. A proposed structural model [9] of the (4 · 4) Moiré structure is presented in Fig. 3c demonstrating an atomic arrangement in which nine Pb atoms sit on top of sixteen copper atoms.…”

“…Various analytical ultra high vacuum (uhv) techniques have been employed in investigations of the atomic structure, properties and behavior of sub-monolayer and monolayer deposits of Pb on Cu(1 1 1): low energy electron diffraction (LEED) [1][2][3]; spot profile analysis low energy electron diffraction (SPA-LEED) [4,5]; low energy electron microscopy (LEEM) [6,7]; scanning tunneling microscopy (STM) [2,3,8,9]; high resolution helium atom scattering (HAS) [10], thermal energy atom scattering (TEAS) [2,11] and angle scanning ultraviolet (UV) photoemission [12]. Room temperature uhv STM results have demonstrated that despite immiscibility of this system in the bulk, the initial stages of Pb growth on Cu(h k l) results in the formation of surface alloys [8,9,13,14]. This system illustrates the dominant effect of atomic size mismatch that favors surface alloy formation [15].…”

Microscopic view of epitaxial metal growth: nucleation and aggregation

“…Although a detail (0.02 A Ê ), this height is unexpected as these atoms reside on bridge sites. It can be explained, however, through relaxation of the substrate [275]. Substrate relaxation often leads to adsorption heights in the topmost layer that are unexpected when assuming a rigid substrate [155,164,275±278].…”