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Cohesion and Structure of Surfaces

Sprache: Englisch.
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During the past fifteen years there has been a dramatic increase in the number of different surfaces whose structures have been determined experimentally. For example, whereas in 1979 there were only 25 recorded adsorption structures, to date there a … weiterlesen
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Titel: Cohesion and Structure of Surfaces

ISBN: 0444898298
EAN: 9780444898296
Sprache: Englisch.
Herausgegeben von K. Binder, M. Bowker, J. E. Inglesfield
ELSEVIER LTD

Januar 1996 - gebunden - 389 Seiten

Beschreibung

During the past fifteen years there has been a dramatic increase in the number of different surfaces whose structures have been determined experimentally. For example, whereas in 1979 there were only 25 recorded adsorption structures, to date there are more than 250. This volume is therefore a timely review of the state-of-the-art in this dynamic field.Chapter one contains a compilation of the structural data base on surfaces within a series of tables that allows direct comparison of structural parameters for related systems. Experimental structural trends amongst both clean surfaces and adsorbate systems are highlighted and discussed.The next chapter outlines the successes of local density functional theory in predicting the relaxations and reconstructions of clean metal and semiconductor surfaces, and the behaviour of adsorbates such as hydrogen, oxygen and alkali elements on metal surfaces, thereby explaining some of the experimental trends observed within the database. These ab initio density functional calculations are of ground state properties at the absolute zero of temperature. Chapter three provides an introduction to finite temperature effects in a pedagogical review of current statistical mechanical treatments of phase transitions at surfaces, many of which display the prominent role of fluctuations or non-mean field behaviour. The final chapter discusses the relationship of the reactivity of a surface to its morphology and composition, which is particularly relevant to a fundamental understanding of catalysis.

Inhaltsverzeichnis

Preface. Surface Crystallography: The Experimental Data Base (P.J. Rous). Abstract. Introduction. Metals. Semiconductors. Graphite and diamond surfaces. Compounds. Selected bibliography. Acknowledgements. References. Theory of Surface Structure and Bonding (J.E. Inglesfield). Abstract. Introduction. Solving the Schrodinger equation at the surface. Forces and optimization. Clean metal surfaces. Adsorbates on metals. Semiconductor surfaces. Conclusions. Acknowledgements. References. Phase Transitions at Surfaces (K. Binder). Abstract. Introduction: surface phase transitions versus transitions in the bulk. Phenomenological theory of phase transitions: a brief review. Surface effects on bulk phase transitions. Discussion. Acknowledgements. References. Surface Structure and Reactivity (M. Bowker). Abstract. Introduction. Thermodynamic considerations. Adsorption. Desorption. Surface diffusion. Surface reactions. Structure dependence of reactivity. Modification of surface reactivity: poisoning and promotion. Conclusions. References. Author index. Subject index.
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