Abstract
We model kinetic roughening during Fe(100) homoepitaxy, where the formation of mounds with selected slope has been observed. Our model incorporates irreversible nucleation and growth of two-dimensional square islands in each layer, and a step-edge barrier to diffusive downward transport (which exceeds the barrier, Ed, to terrace diffusion by ESch). We estimate that ESch≈45meV compared with Ed≈450meV. To reproduce observed behavior, it is also essential for the model to incorporate "downward funneling" of depositing atoms to four-fold hollow adsorption sites, as this controls slope selection. Finally, we discuss model predictions for the non-monotonic temperature dependence of kinetic roughening.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
W. Howard, K. Spear, and M. Frenklach, in Proceedings of the Fourth International Symposium on Diamond Materials, edited by K. V. Ravi and J. P. Dismukes (Electrochemical Society, Pennigton, N.J., 1995), p. 656.
J.A. Venables, Philos. Mag. 27, 697 (1973).
J. Villain, J. Phys. I (France) 1, 19 (1991).
J. Krug, M. Plischke, and M. Siegert, Phys. Rev. Lett. 70, 3271 (1993).
M.D. Johnston et al., Phys. Rev. Lett. 72, 116 (1994).
H.J. Ernst et al., Phys. Rev. Lett. 72, 112 (1994).
J.A. Stroscio, D.T. Pierce, M. Stiles, A. Zangwill, and L.M. Sander, Phys. Rev. Lett. 75, 4246 (1995); J.A. Stroscio, D.T. Pierce, and R.A. Dragoset, ibid 70, 3615 (1993).
K. Meinel, M. Klaua, and H. Bethge, J. Crystal Growth 89, 447 (1988); R. Kunkel et al., Phys. Rev. Lett. 65, 733 (1990); J. Vrijmoeth et al., ibid 72, 3843 (1994).
G. Ehrlich, CRC Crit. Rev. Solid State Sci. 4, 205 (1974).
P. Šmilauer and D. Vvedensky, Phys. Rev. B 48, 17603 (1993).
K. Bromann et al., Phys. Rev. Lett. 75, 677 (1995).
In systems with a large step-edge barrier, the slope should initially increase quickly as “wedding cake”-type pyramids develop on a base of first layer islands. This was observed for Ag/Ag(111) homoepitaxy by E.Z. Luo et al., Appl. Phys. 60, 19 (1995), and Ch. Ammer et al., Surf. Sci. 307–309, 570 (1994).
M. Siegert and M. Plischke, Phys. Rev. Lett. 73, 1517 (1994).
M.C. Bartelt and J.W. Evans, Phys. Rev. Lett. 75, 4250 (1995).
P. Šmilauer and D.D. Vvedensky, Phys. Rev. B 52, 14263 (1995).
J.W. Evans, Vacuum 41, 479 (1990); Phys. Rev. B 43, 3897 (1991).
J.W. Evans, D.E. Sanders, P.A. Thiel, and A.E. DePristo, Phys. Rev. B 41, 5410 (1990); D.E. Sanders and J.W. Evans, in “The Structure of Surfaces III”, edited by S.Y. Tong et al. (Springer, Berlin, 1991).
H.C. Kang and J.W. Evans, Surf. Sci. 271, 321 (1992).
F. Family and T. Vicsek, “Dynamics of Fractal Surfaces” (World Scientific, Singapore, 1991).
H.C. Kang and J.W. Evans, Surf. Sci. 269/270, 784 (1992).
D.M. Halstead and A.E. DePristo, Surf. Sci. 286, 275 (1993).
Y.-L. He et al., Phys. Rev. Lett. 69, 3770 (1992).
M.C. Bartelt and J.W. Evans, Surf. Sci. 298, 421 (1993); MRS Proc. 312, 255 (1993).
P. Šmilauer and S. Harris, Phys. Rev. B 51, 14798 (1995).
J.G. Amar and F. Family, Phys. Rev. B 52, 13801 (1995); preprint.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bartelt, M., Evans, J. Kinetic Roughening of Fe/Fe(100) Epitaxial Thin Films. MRS Online Proceedings Library 399, 89 (1995). https://doi.org/10.1557/PROC-399-89
Published:
DOI: https://doi.org/10.1557/PROC-399-89