Showing papers in "Surface Science in 1992"

TL;DR: In this article, it has been determined that hydrocarbon decomposition at elevated temperatures results in formation of a single layer of graphite on the Pt surface, which is observed to accumulate, forming a layer at the lower step edges and also forming large, regularly shaped islands on the terraces.

TL;DR: In this paper, the growth of fullerene films by vapor deposition on Au(111) was studied using UHV-STM, LEED, AES, and TOF-SIMS.

TL;DR: In this paper, a scanning tunneling microscopy (STM) study of the chemistry of hydrogen on the Si(100) surface is presented, and the structure and stability of the hydrogenated 2 × 1, 3 × 1 and 1 × 1 surfaces are studied.

TL;DR: In this paper, infrared reflection-absorption spectroscopy (IRAS) has been used to study the adsorption of carbon monoxide on a Pd(111) surface.

TL;DR: In this article, the adsorption of ethylene on Si(100)-(2 × 1) has been studied in ultrahigh vacuum, and the activation energy difference for desorption and chemisorption from the precursor (Ed − Er), was found to be 2.9 kcal mol−1.

TL;DR: In this paper, the onset of surface melting of the basal plane (0001) face of TIP4P ice is studied in the temperature range T = 190−250 K using the molecular dynamics (MD) method.

TL;DR: In this article, high resolution electron energy loss spectroscopy (EELS) and IRAS were used to characterize Si(111) and Si(100) surfaces after chemical etching in solutions of HF and buffered HF.

TL;DR: Gold sputtering produces pebble-type structures with very small grains and no crystallographic texture, while evaporation of gold onto glass or mica produces large, flat crystallites, with a pronounced {111} texture.

TL;DR: In this paper, the authors used the electron beam of a scanning electron microscope (SEM) to deposit thin carbon microtips on the end of commercially available silicon nitride SFM cantilevers.

TL;DR: In this paper, the homoepitaxial growth of Pt on Pt(111) has been investigated by STM and the results have been compared to recent thermal He scattering (TEAS) data obtained on the same system.

TL;DR: The surface diffusion coefficient of Si atoms on a Si(001) surface is quantitatively determined using scanning tunneling microscopy as discussed by the authors, which relies on counting the number of islands that form at various substrate temperatures for a given deposited dose at a given deposition rate.

TL;DR: In this article, the authors investigated the frizzes as a function of time and substrate temperature and showed that frizzs are caused by kink motion which is rapid on the time scale of a tunnel image.

TL;DR: In this paper, X-ray photoelectron spectroscopy (XPS) was used to study ultra-thin films of silicon oxides supported on a Mo(100) surface.

TL;DR: In this article, the electronic and geometric structure of TiO 2 supports are monitored during overlayer formation in the sub-monolayer and monolayer regimes, and the appearance of Ti 3+ features in XPS spectra is confirmed.

TL;DR: In this paper, the role of dielectric confinement for enhancing excitonic effects in layered PbI 4-based compounds was studied and it was shown that unusually strong biexciton effects are readily observable (binding energy on the order of 50 meV) and that the large excitionic binding (∼ 300 meV).

TL;DR: In this paper, a comparative investigation has been made into the atom-probe mass spectrometry of FeC and FeN systems, and the existence of a previously unidentified species, C 4 ++, is demonstrated, which largely accounts for the discrepancies in earlier atom probe analyses of Fe ǫC martensites.

TL;DR: In this paper, the influence of predosed bismuth upon the electrooxidation of formic acid and methanol to CO2 on Pt(111) and (100) in 0.1M HClO4 was examined by means of voltammetry combined with real-time infrared spectroscopy.

TL;DR: The Ni3Al alloy was studied by XPS, LEED and LEIS as mentioned in this paper, and at pressures of oxygen under 5 × 10−5 Pa and at temperatures higher than 700 K, a layer of Al2O3 grows on the surface forming islands of uniform thickness of the order of 5 A. The structure of these islands is related to that of γ-alumina.

TL;DR: The chemistry of iodobenzene on a Cu(111) surface has been studied by Auger electron spectroscopy (AES), high resolution electron energy loss spectro-graph (HREELS), temperature-programmed reaction (TPR) spectrograms, and work function change measurements as mentioned in this paper.

TL;DR: In situ reflection electron microscopy experiments have been done on steps in thermodynamic equilibrium on clean Si(111) surfaces (900°C) in this paper, where isolated steps and step trains (mean step separation from 20 to 140 nm) were studied.

TL;DR: In this paper, infrared reflection absorption spectroscopy (IRAS) was used to study CO adsorption on MgO ultrathin films grown on a Mo(100) surface.

TL;DR: In this article, the diffusion of a single metal atom on the surface of a fcc (001) metal was investigated and direct molecular dynamics simulations were performed for Ag on Ag and Rh on Rh(001) systems.

TL;DR: In this paper, the authors discuss the equilibration of the distribution of terrace widths when step motion occurs through the exchange of atoms with a reservoir of adatoms on the terraces.

TL;DR: Duriez et al. as discussed by the authors measured the adsorption-desorption kinetics of CO on Pd clusters, epitaxially grown on MgO(100).

TL;DR: In this paper, it was shown that periodic domain structures can be formed under conditions of phase segregation on metal surfaces, and the effect is strongest when the work function difference is large and the domain boundary energy is small.

TL;DR: In this article, the authors investigated the formation of a dative σ-bond with the surface of the MgO(100) surface and found that the formation is largely due to electrostatic effects.

TL;DR: In this paper, a new theoretical frame for scanning tunnelling microscopy (STM) processes is provided, based on perturbative coupling of the adsorbate levels to the substrate and tip.

TL;DR: The reactions of formaldehyde on differently prepared surfaces of a TiO2(001) single crystal were investigated by temperature-programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS) as mentioned in this paper.

TL;DR: In this article, two well ordered oxygen induced reconstructions with large unit cells, 29 and 44 times larger than the (1 × 1) unit cell, have been identified with the assumption that the reconstructions emerge as coincidence lattices between the 1 × 1 lattice and a hexagonal substructure associated with the (111) plane of Cu 2 O.

TL;DR: In this article, a study of CO on Pt(335) at various coverages using TPD and EELS was conducted, where the authors observed bridge-bonded CO on the edge and terrace.