%0 Journal Article
%A Dieluweit, S.
%A Ibach, H.
%A Giesen, M.
%A Einstein, T. L.
%T Orientation dependence of step stiffness: Failure of SOS and Ising Models to describe experimental data
%J Physical review / B
%V 67
%N 12
%@ 0163-1829
%C College Park, Md.
%I APS
%M PreJuSER-28616
%P 121410
%D 2003
%Z Record converted from VDB: 12.11.2012
%X 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 well and show a substantial dependence of the stiffness on the angle of orientation. With the exception of steps oriented along [110], the experimental stiffness is significantly larger than the stiffness calculated within the solid-on-solid model and the Ising model, even if next-nearest-neighbor interactions are taken into account. Our results have considerable consequences for the understanding and for the theoretical modeling of equilibrium and growth phenomena, such as step meandering instabilities.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000182158000030
%R 10.1103/PhysRevB.67.121410
%U https://juser.fz-juelich.de/record/28616