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Session D40 - Poster Session I.
POSTER session, Monday afternoon, March 12
Exhibit Hall, Washington State Convention Center

[D40.028] Critical Dynamics and Diffusion on W(001) Surface

Emma Falck, Tapio Ala-Nissila (Laboratory of Physics and Helsinki Institute of Physics, Helsinki University of Technology), Enzo Granato (INPE/LAS, Brazil), See-Chen Ying (Department of Physics, Brown University)

A clean W(001) surface exhibits a temperature-driven order-disorder reconstruction to a c(2 \times 2) phase [4,6]. This structural phase transition has been the subject of numerous studies: it has attracted both experimental and theoretical groups [2-6]. We present results of simulation studies of the critical dynamics of the W(001) model system, concentrating on dynamical scaling [2] and anomalous behavior of diffusion [1].

[1] T. Ala-Nissila, W. K. Han, and S.-C. Ying, Phys. Rev. Lett. 68, 1866 (1992).

[2] M. Baldan, E. Granato, and S.-C. Ying, Phys. Rev. B 62, 2146 (2000).

[3] H.-J. Ernst, E. Hulpke, and J. P. Toennies, Phys. Rev. B 46, 16081 (1992).

[4] W. K. Han, S.-C. Ying, and D. Sahu, Phys. Rev. B 41, 4403 (1990).

[5] W. K. Han and S.-C. Ying, Phys. Rev. B 48, 14524 (1993).

[6] C. Z. Wang, A. Fasolino, and E. Tosatti, Phys. Rev. B 37, 2116 (1988).

Part D of program listing