This volume contains summaries of lectures and contributed papers delivered at an International Summer School on "Dynamical Phenomena at Surfaces, I nterfaces and Superl atti ces" hel d at the Ettore Maj orana Centre for Sci en­ tific Culture, Erice (Sicily), Italy, July 1-13, 1984. The School was orga­ ni zed under the auspi ces of the Surfaces and Interfaces Secti on of the Condensed Matter Division of the European Physical Society as the sixth course in the series on Materials Science and Technology. Approximately 60 parti c i pants from all regi ons of Europe, the Uni ted States, and further afield - Hong Kong, China, India - were able to take part in a program of 45 lectures and 11 contributed talks, which covered most of the solid-state aspects of the subject. In recent years, there has been an explosion of interest in the proper­ ties of carefully prepared surfaces, interfaces, and multilayer thin films. This advance in research has received its impetus from the technological re­ levance of surfaces and interfacial phenomena associated with heterogeneous catalysis, corrosion, and, particularly, new developments in microelectronics. One of the most important developments to emerge over the past decade has been our ability to prepare ultra-thin structures at the submicron level, i. e. , to engineer low-dimensional solids at the atomic-scale level.

I Structure.- 1. Structural Determination of Surfaces and Overlayers with Diffraction Methods (With 7 Figures).- 2. Defects at Surfaces (With 17 Figures).- 3. Metal-Metal Superlattices (With 11 Figures).- 4. Advances in Semiconductor Superlattices, Quantum Wells and Heterostructures.- Contributions.- Electronic Surface Transitions in Si(111)2 ×1 Studied by Polarized Light (With 2 Figures).- Short Range Bonding Interaction at Metal-Metal Interfaces (With 2 Figures).- II Lattice Dynamics.- 5. Phonons at Interfaces and Superlattices (With 8 Figures).- 6. Pseudopotentials and Dynamical Properties of Metallic Surfaces (With 3 Figures).- 7. One-Phonon Scattering of He Atoms from the Ag (111) Surface (With 6 Figures).- 8. Electron Energy-Loss Spectroscopy for Metal Surfaces (With 9 Figures).- 9. Electron Energy-Loss Spectroscopy of Surfaces and Absorbates (With 5 Figures).- Contributions.- High Resolution Inelastic He-Atom Scattering from Crystal Surfaces (With 3 Figures).- Surface Lattice Dynamics of Ordered Overlayers on Metals.- Bulk and Surface Phonons in Superlattices.- III Phase Transitions.- 10. Surface Reconstruction Phase Transformations (With 17 Figures).- 11. Structural Phase Transitions on W and Mo Surfaces (With 1 Figure).- Contributions.- Charge Density Waves in Layered Compounds (With 2 Figures).- Dynamics of Mismatched Overlayers (With 1 Figure).- IV Electronic States.- 12. Electronic Structure of Surfaces, Interfaces, and Superlattices.- 13. Electrons and Phonons in One and Two Dimensions in Semiconductor Structure (With 26 Figures).- 14. RHEED and Photoemission Studies of Semiconductors Grown in-situ by MBE (With 20 Figures).- 15. Metal-Semiconductor Interfaces and Schottky Barriers (With 11 Figures).- Contribution.- Catalytic Effect of Near-Noble Metals onSi Oxidation (With 2 Figures).- V Optical Properties.- 16. Raman and Infrared Spectroscopy of Layered Structures (With 1 Figure).- 17. Brillouin Scattering in CaAs-Ga1 ?Alx As Superlattices (With 4 Figures).- 18. Nonlinear Surface Polaritons (With 8 Figures).- 19. Surface Plasmon Emission as a Probe of Hot-Electron Dynamics (With 12 Figures).- 20. Spectroscopy of Two Dimensional Plasmas in Semiconductor Heterostructures (With 7 Figures).- Contribution.- Surface Coherent Anti-Stokes Raman Spectroscopy.- VI Magnetic Properties.- 21. Surface Magnetism by Spin Polarized Electrons (With 1 Figure).- 22. Magnetism at Interfaces and Surfaces, as Probed by Neutron Scattering (With 7 Figures).- Contribution.- Long Wavelength Bulk and Surface Spin Waves in Metallic Superlattices (With 1 Figure).- Index of Contributors.