Abstract
In chemisorption systems, a rich variety of surface structures has been found as a function of temperature and adsorbate coverage. The detailed investigation of these surfaces phases and the transitions between them has been the subject of many recent studies both experimentally and theoretically. In most chemisorption systems,the occurrence of different phases can be understood, at least qualitatively, with a lattice gas model, in which the adsorption is site specific and the ordered phases are due to the lateral adsorbate-adsorbate interaction [1]. However, recent LEED studies [2] first indicated that in the case of W(001) and Mo(001) even the clean surfaces undergo a reversible structural phase transition as the temperature is lowered. The transition is from the (1×1) structure to c(2×2) structure on W(001) and an incommensurate structure in the case of Mo(001). The role of the adsorbate at low coverage is to enhance or suppress the inherent instability of the surface towards reconstruction as well as to alter the relative stability of different structures which are close in energy [3]. These LEED findings were corroborated subsequently by many other types of experiment, such as high energy ion scattering [4], electron energy-loss spectroscopy [5] and electron stimulated desorption [6]. By now, the existence of structural phase transitions for clean W (001) and Mo(OOl) surfaces is clearly established. These phase transitions are of a different nature from those driven by adsorbate-adsorbate interactions. In the subsequent sections we shall discuss the nature of these new phases and current theoretical models under study for understanding these surface structural phase transitions.
Supported in part by the M.R.L. program at Brown University funded through National Science Foundation and by an O.N.R. contract N00014-84-K-0411.
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References
L.D. Roelofs and P.J. Estrup, Surface Sci. 125, 51 (1983)
T.F. Felter, R.A. Barker and P.J. Estrup, Phys. Rev. Letters 38, 1138 (1977); M.K. Debe and D.A. King, Surface Sci. 81, 193 (1979)
R.A. Barker and P.J. Estrup, J. Chem. Phys. 74, 201 (1980); D.A. King and G. Thomas, Surface Sci. 92, 201 (1980)
I. Stensgaard, L.C. Feldman and P.J. Silverman, Phys. Rev. Letters 42, 247 (1979); I. Stensgaard and L.C. Feldman, Surface Sci. 87, 410 (1979)
M.R. Barnes and R.F. Willis, Phys. Rev. Letters 41, 1727 (1978)
R. Jaeger and D. Menzel, Surface Sci. 100, 561 (1980)
J.E. Inglesfield, J. Phys. C11 L69 (1978); 12, 149 (1979)
K. Terakura, I. Terakura and N. Hamada, Surface Sci. 103, 103 (1981)
A. Freeman, this volume
M.I. Holmes and T. Gustafson, Phys. Rev. Letters 47, 443 (1981)
W. Mcmillan, Phys. Rev. B16, 643 (1977)
E. Tosatti in Korpacz Winter School of Theoretical Physics, Ed.A Pekalski and J. Pryzstawa (Springer, Berlin 1978)
A. Fasolino, G. Santoro and E. Tosatti, Phys. Rev. Letters 44, 1684 (1980); Proceedings of International conference on Phonon Physics, Bloomington, Indiana (1981)
G.Y. Hu and S.C. Ying, Submitted to Surface Science
S.C. Ying and L.D. Roelofs, Surface Sci. 125, 218 (1983); L.D. Roelofs, G.Y. Hu and S.C. Ying, Phys. Rev. B28, 6369 (1983)
G.Y. Hu, L.D. Roelofs and S.C. Ying, to be published
J. Wendel ken and G.C. Wang, Proceedings of 30th National Symposium, and private communications
A.D. Bruce, Advances in Physics 29, 111 (1980)
S. Ohnishi, A.J. Freeman, E. Wimmer, Phys. Rev. B29, 5267 (1984)
G.Y. Hu and S.C. Ying, to be published
P. Estrup, private communication
K.H. Lau and S.C. Ying, Phys. Rev. Letters 44, 1222 (1980)
L.D. Roelofs and S.C. Ying, to appear in Surface Science
P. Estrup, L.D. Roelofs and S.C. Ying, to be published
K.H. Lau and S.C. Ying in: Ordering in Two Dimensions, Ed. S.K. Sinha (North-Holland, New York 1980)
T. Inaoha and A. Yoshimori, Surface Sci. 115, 301 (1982)
A. Fasolino, G. Santoro and E. Tosatti, Surface Sci. 125, 317 (1983)
V. Heine and J.D.C. McConnel, Phys. Rev. Letters 46, 1092 (1981)
S.C. Ying and G.Y. Hu, Proceedings of 1st International conference on the structure of solid surfaces, Berkeley, 1984
W. Mcmillan, V.L. Pokrovsky and A.L. Talapov, Sov. Phys. JETP 51, (1) 134 (1980)
R.F. Willis in Many-Body Phenomena at Surface, Eds. Langreth and Suhl, p. 297 (Academic Press, 1984)
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Ying, S.C. (1985). Structural Phase Transitions on W and Mo Surfaces. In: Nizzoli, F., Rieder, KH., Willis, R.F. (eds) Dynamical Phenomena at Surfaces, Interfaces and Superlattices. Springer Series in Surface Sciences, vol 3. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82535-4_16
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DOI: https://doi.org/10.1007/978-3-642-82535-4_16
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