Phonons of Metallic Vicinal Surfaces

Uniaxial magnetic anisotropy induced by vicinal surfaces in half metallic La0.7Sr0.3MnO3 thin films

A comparison of the uniaxial deformation of copper and nickel (1 1 19) surfaces: a molecular dynamics study

While a lot is known about the deformation of metallic surfaces from experiments, elasticity theory and simulations, this investigation represents the first molecular-dynamics-based simulation of uniaxial deformation for the vicinal surfaces in a comparison of copper and nickel. These vicinal surfaces are composed of terraces divided by equidistant, mono-atomic steps. The periodicity of vicinal...

Elastic relaxations and interactions on metallic vicinal surfaces: testing the dipole model

We have studied, by quenched molecular dynamics (QMD) using a second-moment approximation (SMA) potential, the atomic relaxations and step interaction energies on Ni, Cu, Pt and Au vicinal surfaces for which steps run along the [ ] 0 1 1 direction. The results have been compared to anisotropic linear elasticity calculations (ALE). We show that steps are well described with a model of lines of f...

Electronic structure of atomic chains on vicinal Si „ 111 ... - Au

Unusual electronic states are found for gold-induced chain and ladder structures on vicinal Si~111! surfaces, such as Si(111)532-Au and Si~557!-Au. As two-dimensional reference the Si(111)A33A3-Au surface is investigated. The highly stepped Si~557!-Au surface is metallic, despite an even electron count. That is explained by two half-filled, nearly degenerate bands. On the Si(111)532-Au surface ...

OFFPRINT New evidence for the influence of step morphology on the formation of Au atomic chains on vicinal Si(111) surfaces

Gold atomic chain structures that grow on singular and vicinal Si(111) surfaces have attracted considerable interest as model systems for exploring quasi–one-dimensional metallic behaviour. The structure of the prototypical Si(111)-5× 2-Au system remains controversial, however. Reflection anisotropy spectroscopy provides new, independent evidence supporting a recently proposed three-Au-chain st...