Dynamic Spin-Fluctuation Theory of Metallic Magnetism, 1st ed. 2018

Langue : Anglais

Auteurs : Melnikov Nikolai B., Reser Boris I.

Couverture de l’ouvrage Dynamic Spin-Fluctuation Theory of Metallic Magnetism

Résumé
Sommaire
Commentaire

This book presents a theoretical framework for magnetism in ferromagnetic metals and alloys at finite temperatures. The objective of the book is twofold. First, it gives a detailed presentation of the dynamic spin-fluctuation theory that takes into account both local and long-wave spin fluctuations with any frequency. The authors provide a detailed explanation of the fundamental role of quantum spin fluctuations in the mechanism of metallic magnetism and illustrate the theory with concrete examples. The second objective of the book is to give an accurate and self-contained presentation of many-body techniques such as the functional integral method and Green's functions, via a number of worked examples. These computational methods are of great use to solid state physicists working in a range of specialties.

The book is intended primarily for researchers, but can also be used as textbook. The introductory chapters offer clear and complete derivations of the fundamentals, which makes the presentation self-contained. The main text is followed by a number of well-organized appendices that contain a detailed presentation of the necessary many-body techniques and computational methods. The book also includes a list of symbols and detailed index. This volume will be of interest to a wide range of physicists interested in magnetism and solid state physics in general, both theoreticians and experimentalists.

A Basic Mathematical Results.- B Fluctuating Fields.- C Fourier Transformations.- D Dynamic Susceptibility in the RPA.- E Proofs of Three Results in the DSFT.- F Basic Approximations in Scattering Theory.- G Lattice Vibrations in the Harmonic Approximation.- H Numerical Integral Transformations.- I DSFT Solution Methods and Software.

Provides a clear and self-contained treatment of the many-electron problem of metallic magnetism

Introduces theoretical frameworks along with the necessary mathematical background

Emphasizes practical problems, illustrated by concrete metals and alloys

Includes detailed description of computational methods for practical applications

Written at postgraduate level, with some chapters accessible to graduate students with elementary knowledge of quantum mechanics, statistical mechanics, and solid state physics