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cond-mat.mtrl-sci2004
Low-Temperature Orientation Dependence of Step Stiffness on {111} Surfaces
T. J. Stasevich, Hailu Gebremariam, T. L. Einstein +3
For hexagonal nets, descriptive of {111} fcc surfaces, we derive from combinatoric arguments a simple, low-temperature formula for the orientation dependence of the surface step li…
cond-mat.mtrl-sci2004
The Effects of Next-Nearest-Neighbor Interactions on the Orientation Dependence of Step Stiffness: Reconciling Theory with Experiment for Cu(001)
T. J. Stasevich, T. L. Einstein, R. K. P. Zia +3
Within the solid-on-solid (SOS) approximation, we carry out a calculation of the orientational dependence of the step stiffness on a square lattice with nearest and next-nearest ne…
cond-mat.mtrl-sci2003
Orientation Dependence of Step Stiffness: Failure of SOS and Ising Models to Describe Experimental Data
Sabine Dieluweit, Harald Ibach, Margret Giesen +1
We have investigated the step stiffness on Cu(001) surfaces as a function of step orientation by two independent methods at several temperatures near 300 K. Both sets of data agree…