Bechstedt Principles of Surface Physics

Erscheinungsjahr 2012
ISBN: 978-3-642-55466-7
Verlag: Springer
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 342 Seiten, eBook

Reihe: Advanced Texts in Physics

In recent decades, surface and interface physics has become an increasingly important subdiscipline within the physics of condensed matter as well as an interdisciplinary ?eld between physics, crystallography, chemistry, biology, and materials science. There are several driving forces for the development of the ?eld, among them semiconductor technology, new materials, epitaxy and chemical catalysis. The electrical and optical properties of nanostructures based on di?erent semiconductors are governed by the interfaces or, at least, by the presence of interfaces. A microscopic understanding of the growth processes requires the investigation of the surface processes at an atomic level. Elementary processes on surfaces, such as adsorption and desorption, play a key role in the understanding of heterogeneous catalysis. During the course of the surface investigations, it has been possible to observe a dramatic progress in the ability to study surfaces of materials in general, and on a microscopic scale in particular. There are two main reasons for this progress. From the experimental point of view it is largely due to the development and availability of new types of powerful microscopes. Sp- tacular advances in techniques such as scanning tunneling microscopy now allow us to observe individual atoms on surfaces, and to follow their paths with a clarity unimaginable a few years ago. From the theoretical point of view (or rather the viewpoint of simulation) progress is related to the wide availability of computers and the dramatic increase of their power.

Zielgruppe

Research

Autoren/Hrsg.

Bechstedt, Friedhelm

Inhaltsverzeichnis

1. Symmetry.- 1.1 Model Surfaces.- 1.2 Two-Dimensional Crystals.- 1.3 Reciprocal Space.- 2. Thermodynamics.- 2.1 Kinetic Processes and Surfaces in Equilibrium.- 2.2 Thermodynamic Relations for Surfaces.- 2.3 Equilibrium Shape of Small Crystals.- 2.4 Surface Energy and Morphology.- 2.5 Stoichiometry Dependence.- 3. Bonding and Energetics.- 3.1 Orbitals and Bonding.- 3.2 Dangling Bonds.- 3.3 Total Energy and Atomic Forces.- 3.4 Quantitative Description of Structure and Stability.- 3.5 Bond Breaking: Accompanying Charge Transfers and Atomic Displacements.- 4. Reconstruction Elements.- 4.1 Reconstruction and Bonding.- 4.2 Chains.- 4.3 Dimers.- 4.4 Adatoms and Adclusters.- 5. Elementary Excitations I: Single Electronic Quasiparticles.- 5.1 Electrons and Holes.- 5.2 Many-Body Effects.- 5.2.1 Quasiparticle Equation.- 5.3 Quasiparticle Surface States.- 5.4 Strong Electron Correlation.- 6. Elementary Excitations II: Pair and Collective Excitations.- 6.1 Probing Surfaces by Excitations.- 6.2 Electron-Hole Pairs: Excitons.- 6.3 Plasmons.- 6.4 Phonons.- 6.5 Elementary Excitations for Reduced Dimension.- 7. Defects.- 7.1 Realistic and Ideal Surfaces.- 7.2 Point Defects.- 7.3 Line Defects: Steps.- 7.4 Planar Defects: Stacking Faults.- References.