Spin Fluctuations In Itinerant Electron Magnetism PDF Download

Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Spin Fluctuations In Itinerant Electron Magnetism PDF full book. Access full book title Spin Fluctuations In Itinerant Electron Magnetism.

Spin Fluctuations in Itinerant Electron Magnetism

Spin Fluctuations in Itinerant Electron Magnetism
Author: Toru Moriya
Publisher: Springer Science & Business Media
Total Pages: 253
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 3642824994

Download Spin Fluctuations in Itinerant Electron Magnetism Book in PDF, ePub and Kindle

Ferromagnetism of metallic systems, especially those including transition metals, has been a controversial subject of modern science for a long time. This controversy sterns from the apparent dual character of the d-electrons responsible for magnetism in transition metals, i.e., they are itinerant elec trons described by band theory in their ground state, while at finite tem peratures they show various properties that have long been attributed to a system consisting of local magnetic moments. The most familiar example of these properties is the Curie-Weiss law of magnetic susceptibility obeyed by almost all ferromagnets above their Curie temperatures. At first the problem seemed to be centered around whether the d-elec trons themselves are localized or itinerant. This question was settled in the 1950s and early 1960s by various experimental investigations, in particular by observations of d-electron Fermi surfaces in ferromagnetic transition metals. These observations are generally consistent with the results of band calculations. Theoretical investigations since then have concentrated on explaining this dual character of d-electron systems, taking account of the effects of electron-electron correlations in the itinerant electron model. The problem in physical terms is to study the spin density fluctuati·ons, which are ne glected in the mean-field or one-electron theory, and their influence on the physical properties.


Spin Fluctuation Theory of Itinerant Electron Magnetism

Spin Fluctuation Theory of Itinerant Electron Magnetism
Author: Yoshinori Takahashi
Publisher: Springer
Total Pages: 190
Release: 2013-04-09
Genre: Science
ISBN: 364236666X

Download Spin Fluctuation Theory of Itinerant Electron Magnetism Book in PDF, ePub and Kindle

This volume shows how collective magnetic excitations determine most of the magnetic properties of itinerant electron magnets. Previous theories were mainly restricted to the Curie-Weiss law temperature dependence of magnetic susceptibilities. Based on the spin amplitude conservation idea including the zero-point fluctuation amplitude, this book shows that the entire temperature and magnetic field dependence of magnetization curves, even in the ground state, is determined by the effect of spin fluctuations. It also shows that the theoretical consequences are largely in agreement with many experimental observations. The readers will therefore gain a new comprehensive perspective of their unified understanding of itinerant electron magnetism.


Itinerant Electron Magnetism: Fluctuation Effects

Itinerant Electron Magnetism: Fluctuation Effects
Author: Dieter Wagner
Publisher: Springer Science & Business Media
Total Pages: 455
Release: 2012-12-06
Genre: Science
ISBN: 940115080X

Download Itinerant Electron Magnetism: Fluctuation Effects Book in PDF, ePub and Kindle

A summary of recent developments in theoretical and experimental studies of fluctuation effects in itinerant electron magnets, focusing on novel physical phenomena: soft-mode spin fluctuations and zero-point effects, strong spin anharmonicity, magnetic frustrations in metals, fluctuation effects in Invar alloys and low-dimensional systems. All of these may be important for novel high-technology applications.


Theory of Itinerant Electron Magnetism

Theory of Itinerant Electron Magnetism
Author: Jürgen Kübler
Publisher: Oxford University Press
Total Pages: 444
Release: 2000-08-17
Genre: Science
ISBN: 9780198500285

Download Theory of Itinerant Electron Magnetism Book in PDF, ePub and Kindle

This book is an application of quantum mechanics and statistical mechanics to the field of magnetism. A large part of the book is devoted to a detailed treatment of the connections between electronic properties and magnetism, and how they differ in the various known magnetic systems. Current trends are exposed and explained for a large class of alloys and compounds. The modern field of artificially layered systems - known as multilayers - and their industrial applications are dealt with in detail. The book also relates the rich thermodynamic properties of magnets to the ab initio results originating from the electronic structure.


Creative Complex Systems

Creative Complex Systems
Author: Kazuo Nishimura
Publisher: Springer Nature
Total Pages: 427
Release: 2021-10-26
Genre: Business & Economics
ISBN: 9811644578

Download Creative Complex Systems Book in PDF, ePub and Kindle

In recent years, problems such as environmental and economic crises and pandemics caused by new viruses have been occurring on a global scale. Globalization brings about benefits, but it can increase the potential risks of “systemic problems”, leading to system-wide disruptions. The coronavirus pandemic, declared on March 11, 2020, by the World Health Organization, has revealed social disparities in the form of a higher risk of death for people of low-socioeconomic status and has caused massive destruction of the economy and of globalization itself. Extensive efforts to cope with these challenges have often led to the emergence of additional problems due to the chain of hidden causation. What can be done to protect against such emerging challenges? Despite the resulting complexity, once these individual problems are considered as different aspects of a single whole, seemingly contradictory issues can become totally understandable, as they can be integrated into a single coherent framework. This is the integrationist approach in contrast to the reductionist approach. Situations of this kind are truly relevant to understanding the question, “What are creative complex systems?” This book features contributions by members and colleagues of the Kyoto University International Research Unit of Integrated Complex System Science. It broadens our outlook from the traditional view of stability, in which global situations are eventually stabilized after the impact of destruction, to “creative” complex systems.


Itinerant-electron Magnetism

Itinerant-electron Magnetism
Author: R. D. Lowde
Publisher: North-Holland
Total Pages: 364
Release: 1977
Genre: Science
ISBN:

Download Itinerant-electron Magnetism Book in PDF, ePub and Kindle