Description
(Short description)
Aktuelle Anwendungen der Koinzidenz-Spektroskopietechniken, mit deren Hilfe die Bewegung und Wechselwirkung von Elektronen in Festkörpern untersucht wird. Das Probenspektrum reicht von großen Molekülen und Metallclustern bis hin zu geordneten Oberflächen und Legierungen.
(Text)
Das Wissen über die Bewegung von Elektronen in Festkörpern und ihre Wechselwirkungen mit ihrer Umgebung erlaubt es, Aussagen über magnetische und optische Materialeigenschaften treffen zu können. Mit diesem Buch liegt die erste eigenständige und umfassende Publikation zur Beschreibung und Vorhersage von Elektronenbewegungen in Festkörpern vor.
Band 1 führt in den theoretischen Hintergrund ein (Coulomb-Streuung, 3-Teilchen- und Vielteilchen-Systeme), im zweiten Band wird eine Auswahl möglicher Anwendungen präsentiert (Elektronen im Kristall, Streuung, Quantum dots).
(Short description)
Knowledge of the excitation characteristics of matter is decisive for the descriptions of a variety of dynamical processes, which are of significant technological interest. E. g. transport properties and the optical response are controlled by the excitation spectrum. This self-contained work is a coherent presentation of the quantum theory of correlated few-particle excitations in electronic systems. The first volume introduces the basic theoretical concepts and tools for dealing with many-body excited states. With this second volume, the author presents an up-to-date selection of application of the developed concepts: the topics covered range from few-particle excitations in atomic systems to the many-body excitation spectrums of large molecules, metal clusters, solids and surfaces.
(Text)
An up-to-date selection of applications of correlation spectroscopy, in particular as far as the mapping of properties of correlated many-body systems is concerned.The book starts with a qualitative analysis of the outcome of the two-particle correlation spectroscopy of localized and delocalized electronic systems as they occur in atoms and solids. The second chapter addresses how spin-dependent interactions can be imaged by means of correlation spectroscopy, both in spin-polarized and extended systems. A further chapter discusses possible pathways for the production of interacting two-particle continuumstates.After presenting some established ways of quantifying electronic correlations and pointing out the relationship to correlation spectroscopy, the author addresses in a separate chapter the electron-electron interaction in extended systems, and illustrates the ideas by some applications to fullerenes and metal clusters. The last two chapters are devoted to the investigation of the potential of two-particle spectroscopy in studying ordered surfaces and disordered samples.Throughout the book the material is analyzed using rather qualitative arguments, and the results of more sophisticated theories serve the purpose of endorsing the suggested physical scenarios. The foundations of some of these theories have been presented in a corresponding volume entitled "Concepts of Highly Excited Electronic Systems".
