Van der Waals (vdW) epitaxy is an attractive method for the fabrication of vdW heterostructures. Here Sb2Te3 films grown on three different kind of graphene substrates (monolayer epitaxial graphene, quasi freestanding bilayer graphene and the SiC (6√3 × 6√3)R30° buffer layer) are used to study the vdW epitaxy between two 2-dimensionally (2D) bonded materials. It is shown that the Sb2Te3 /graphe...

Core-level photoelectron spectra, in excellent agreement with ab initio calculations, confirm that the stable wetting layer of water on Ru[0001] contains O-H and H2O in roughly 3:5 proportion, for OHx coverages between 0.25 and 0.7 ML, and T<170 K. Proton disorder explains why the wetting structure looks to low energy electron diffraction (LEED) to be an ordered p(square root of 3 x square root...

Details of the average atomic structure and the possible nature of the surface domain walls of the Si( 111 )-x/3 x V~)R301Au surfaces are presented. Transmission electron diffraction data supports the missing top layer twisted trimer [Surf. Sci. 256 (1991) 135] model in which gold and silicon atoms in the top two layers form sets of like-atom trimers rotated in the same direction about p3 symme...

The vibrational features of carbon monoxide (CO) adsorbed on Ir(111) were studied by means high-resolution core-level spectroscopy. By monitoring the Ir 4f7/2 core level as a function exposure, we proved that CO adsorbs surface always in on-top sites, agreement with results spectroscopy techniques and density functional theory studies. C 1s splittings measured for p(√3 × √3)R30° (233.4 ± 0.5 me...

Low-energy electron diffraction (LEED) is considered as elastic electron-atom scattering (EEAS) operating in a target crystal waveguide, where signal carrier wave wavenumber modulated by exchange-correlation (XC) interaction. A potential designed using KKR (Korringa-Kohn-Rostoker) muffin-tin (MT) model built on overlapping MT spheres that implement atoms with double degree of freedom, radius an...

Due to its remarkable switching effect in electrical and optical properties, VO2 is a promising material for several applications. However, the stoichiometry control of multivalent vanadium oxides, especially with rational deposition technique, still challenging. Here, we propose optimize simple fabrication method rich layers by oxidation metallic atmospheric air. It was shown that sufficiently...

We develop and estimate a spatial game-theoretic model of entry and location choices to examine firms’ strategic clustering decisions. The model identifies two contradictory effects that determine firms’ geographical location choices: a competition effect and a clustering effect. We also separate firm’s strategic clustering incentives from the observed clustering behavior due to exogenous facto...

In situ scanning tunneling microscopy (STM) of the dissolution of a Cu( 1 1 1 ) electrode in aqueous chloride media (HC1 and KCl) was employed to ascertain the mechanism of the reaction at the atomic level. At potentials where there was no dissolution, atomic imaging of the Cu( 1 1 1 ) revealed a ( 6 4 3 x 6d3)R30° structure consisting of a C1 adlattice with a C1-C1 distance of 0.39 f 0.02 nm w...

It is well understood that the two most popular empirical models of location choice conditional logit and Poisson return identical coefficient estimates when the regressors are not individual specific. We show that these two models differ starkly in terms of their implied predictions. The conditional logit model represents a zero-sum world, in which one region's gain is the other regions' loss....

This paper examines apparent misrepresentation among securitized non-agency loans using three indicators: unreported second liens, owner occupancy misreporting, and appraisal overstatements. We find that approximately 30% of loans exhibited some indication of potential misrepresentation. Misreporting is similar in both low and fulldocumentation loans and is associated with a 51% higher likeliho...