Ion scattering and scanning tunnelling microscopy studies of stepped Cu surfaces
The structure and dynamics of stepped Cu(115) surfaces and their behaviour under oxygen adsorption was studied by ion scattering spectroscopy (ISS) and scanning tunnelling microscopy (STM). Azimuthal ion intensity distributions show pronounced minima along the first layer atom rows which can be reproduced by MARLOWE simulations. Thermal roughening is observed above an onset temperature of about 390 K and is completely reversible. These results are supported by STM studies that show that regular monoatomic steps are rather stable at room temperature, whereas for double steps pronounced kink motion is observed with an activation energy of about 0.1 eV.
Bibliographic Reference: Article: Nuclear Instruments and Methods in Physics Research B, Vol. 118 (1996), pp. 456-461
Record Number: 199611498 / Last updated on: 1997-01-16
Original language: en
Available languages: en