TY  - JOUR
AU  - Dieluweit, S.
AU  - Ibach, H.
AU  - Giesen, M.
AU  - Einstein, T. L.
TI  - Orientation dependence of step stiffness: Failure of SOS and Ising Models to describe experimental data
JO  - Physical review / B
VL  - 67
IS  - 12
SN  - 0163-1829
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-28616
SP  - 121410
PY  - 2003
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000182158000030
DO  - DOI:10.1103/PhysRevB.67.121410
UR  - https://juser.fz-juelich.de/record/28616
ER  -