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Coarsening of Unstable Surface Features During Fe(001) Homoepitaxy



Joseph A. Stroscio, Daniel T. Pierce, Mark D. Stiles, A Zangwill, L Sander


The evolution of the surface profile during homoepitaxial growth of Fe(001) is studied by scanning tunnelling microscopy and reflection high energy electron diffraction. The observed morphology exhibits a non-self affine collection of mound-like features that maintain their shape but coarsen as growth proceeds. The characteristic feature separation L is set in the submonolayer regime and increases with thickness, t, as L ~ t 0.16 {plus or minus} 0.04. During the coarsening phase, the mounds are characterized by a magic slope and a lack of reflection symmetry. These observations are shown to be described by a continuum growth equation without capillarity.
Physical Review Letters


Stroscio, J. , Pierce, D. , Stiles, M. , Zangwill, A. and Sander, L. (1995), Coarsening of Unstable Surface Features During Fe(001) Homoepitaxy, Physical Review Letters, [online], (Accessed April 21, 2024)
Created January 1, 1995, Updated June 2, 2021