1998/01/07 by M. Kolesik, M. A. Novotny, Per Arne Rikvold
Physics and Astronomy · #cond-mat
published as Mat.Res.Soc.Symp.Proc. 492, 313 (1998). · to appear in Proceedings of the MRS 1997 Fall Meeting Symposium on Microscopic Simulation of Interfacial Phenomena in Solids and Liquids, 6 pages, LaTex, postscript figures
arxiv created 1998/01/07 · arxiv updated 2009/11/30
Iron sesquilayers are ultrathin films with coverages between one and two atomic monolayers. They consist of an almost defect-free monolayer with compact islands of a second atomic layer on top. This variation of the film thickness results in a strong interaction between domain walls and the island structure. It makes these systems an ideal laboratory to study the dynamics of domain walls driven by weak external fields. We present computer simulations which provide insight into the role of the thermally activated nucleation processes by which a driven domain wall overcomes the obstacles created by the islands.