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Spin Fluctuation Theory Of Itinerant Electron Magnetism
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Book Synopsis Spin Fluctuation Theory of Itinerant Electron Magnetism by : Yoshinori Takahashi
Download or read book Spin Fluctuation Theory of Itinerant Electron Magnetism written by Yoshinori Takahashi and published by Springer. This book was released on 2013-04-09 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Spin Fluctuations in Itinerant Electron Magnetism by : Toru Moriya
Download or read book Spin Fluctuations in Itinerant Electron Magnetism written by Toru Moriya and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Itinerant Electron Magnetism: Fluctuation Effects by : Dieter Wagner
Download or read book Itinerant Electron Magnetism: Fluctuation Effects written by Dieter Wagner and published by Elsevier. This book was released on 1998-08-31 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop on Itinerant Electron Magnetism: Fluctuation Effects & Critical Phenomena, Moscow, Russia, September 15-19, 1997
Book Synopsis Theory of Itinerant Electron Magnetism by : Jürgen Kübler
Download or read book Theory of Itinerant Electron Magnetism written by Jürgen Kübler and published by Oxford University Press. This book was released on 2000-08-17 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, in the broadest sense, is an application of quantum mechanics and statistical mechanics to the field of magnetism. The microscopic theory of many electron systems, which provide the physical understanding of magnetism, is presented in detail. Emphasis is given on how to solve the equations numerically by means of suitable computer programmes, and how to apply them to practical problems arising in mechanical engineering or material sciences.
Book Synopsis Spin Fluctuation Theory of Itinerant Electron Ferromagnetism by : Tôru Moriya
Download or read book Spin Fluctuation Theory of Itinerant Electron Ferromagnetism written by Tôru Moriya and published by . This book was released on 1978 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spin Fluctuation Theory of Itinerant Electron Ferromagnetism by : Tōru Moriya
Download or read book Spin Fluctuation Theory of Itinerant Electron Ferromagnetism written by Tōru Moriya and published by . This book was released on 1978 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Itinerant Electron Magnetism: Fluctuation Effects by : Dieter Wagner
Download or read book Itinerant Electron Magnetism: Fluctuation Effects written by Dieter Wagner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Theory of Itinerant Electron Magnetism by : Jürgen Kübler
Download or read book Theory of Itinerant Electron Magnetism written by Jürgen Kübler and published by Oxford University Press. This book was released on 2021 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, in the broadest sense, is an application of quantum mechanics and statistical mechanics to the field of magnetism. Under certain well described conditions, an immensely large number of electrons moving in the solid will collectively produce permanent magnetism. Permanent magnets are of fundamental interest, and magnetic materials are of great practical importance as they provide a large field of technological applications. The physical details describing the many electron problem of magnetism are presented in this book on the basis of the density functional approximation. The emphasis is on realistic magnets, for which the equations describing properties of the many electron problem can only be solved by using computers. The significant recent and continuing improvements are, to a very large extent, responsible for the progress in this field. Along with an introduction to the density functional theory, the book describes representative computational methods and detailed formulas for physical properties of magnets which include among other things the computation of magnetic ordering temperatures, the giant magneto-resistance, magneto-optical effects, weak ferromagnetism, the anomalous Hall and Nernst effects, and novel quasiparticles, such as Weyl fermions and magnetic skyrmions.
Book Synopsis Dynamic Spin-Fluctuation Theory of Metallic Magnetism by : Nikolai B. Melnikov
Download or read book Dynamic Spin-Fluctuation Theory of Metallic Magnetism written by Nikolai B. Melnikov and published by Springer. This book was released on 2018-08-02 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Modern Theory of Magnetism in Metals and Alloys by : Yoshiro Kakehashi
Download or read book Modern Theory of Magnetism in Metals and Alloys written by Yoshiro Kakehashi and published by Springer. This book was released on 2013-01-11 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes theoretical aspects of the metallic magnetism from metals to disordered alloys to amorphous alloys both at the ground state and at finite temperatures. The book gives an introduction to the metallic magnetism, and treats effects of electron correlations on magnetism, spin fluctuations in metallic magnetism, formation of complex magnetic structures, a variety of magnetism due to configurational disorder in alloys as well as a new magnetism caused by the structural disorder in amorphous alloys, especially the itinerant-electron spin glasses. The readers will find that all these topics can be understood systematically by means of the spin-fluctuation theories based on the functional integral method.
Book Synopsis Single-site Spin Fluctuation Theory of Itinerant-electron Systems with Narrow Bands by : Hideo Hasegawa
Download or read book Single-site Spin Fluctuation Theory of Itinerant-electron Systems with Narrow Bands written by Hideo Hasegawa and published by . This book was released on 1980 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concise Encyclopedia of Magnetic and Superconducting Materials by : K.H.J. Buschow
Download or read book Concise Encyclopedia of Magnetic and Superconducting Materials written by K.H.J. Buschow and published by Elsevier. This book was released on 2005-12-28 with total page 1361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic and superconducting materials pervade every avenue of the technological world – from microelectronics and mass-data storage to medicine and heavy engineering. Both areas have experienced a recent revitalisation of interest due to the discovery of new materials, and the re-evaluation of a wide range of basic mechanisms and phenomena. This Concise Encyclopedia draws its material from the award-winning Encyclopedia of Materials and Engineering, and includes updates and revisions not available in the original set -- making it the ideal reference companion for materials scientists and engineers with an interest in magnetic and superconducting materials. Contains in excess of 130 articles, taken from the award-winning Encyclopedia of Materials: Science and Technology, including ScienceDirect updates not available in the original set Each article discusses one aspect of magnetic and superconducting materials and includes photographs, line drawings and tables to aid the understanding of the topic at hand Cross-referencing guides readers to articles covering subjects of related interest
Book Synopsis A Spin Fluctuation Theory of Itinerant-electron Systems by : Hideo Hasegawa
Download or read book A Spin Fluctuation Theory of Itinerant-electron Systems written by Hideo Hasegawa and published by . This book was released on 1981 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Creative Complex Systems by : Kazuo Nishimura
Download or read book Creative Complex Systems written by Kazuo Nishimura and published by Springer Nature. This book was released on 2021-10-26 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Itinerant-electron Magnetism written by and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Spin Fluctuations on the Electric Field Gradient in Itinerant Electron Magnets by : Yoshinori Takahashi
Download or read book Effect of Spin Fluctuations on the Electric Field Gradient in Itinerant Electron Magnets written by Yoshinori Takahashi and published by . This book was released on 1977 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Kyoto Manifesto for Global Economics by : Stomu Yamash’ta
Download or read book The Kyoto Manifesto for Global Economics written by Stomu Yamash’ta and published by Springer. This book was released on 2018-02-19 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book confronts the failings of current global economics to deliver the equity, sustainability and community empowerment which humanity now needs to handle a troubled future. The volume proposes an economy built from our society, not the other way around. The Kyoto Manifesto was built, layer by layer, over a period of 4 years, based on broad-ranging international symposia held in Kyoto between 2014 and 2017, hosted by the Center for the Creative Economy, Doshisha University. Not stopping at theory and untested ideas however, the Manifesto proposes practical action that will make a difference, including in the problematic technological and ecological context of humanity’s immediate and long-term future. The book is unique and innovative for it moves adventurously across very broad territory. The Manifesto draws from world philosophic arguments, including, specifically, a critique of “liberalism”, further, exploring sociology, cultural anthropology, politics, primatology and early humanity, even quantum physics. Argument is set within mainstream post-1972 economics and political economics as well as direct practical experience working to empower disadvantaged communities through the United Nations. Most importantly, the book’s analysis is deeply informed by the practice of searching for what is “sacred”, the ultimate essence of our humanity, what we can be as a human race—empowered, fulfilled individuals, deeply sharing and caring for each other across our separate cultures and lives. Stomu Yamash’ta’s On Zen performances, set the context for the Symposia, bringing different religions and cultures together across their dividing boundaries into a coherent search for peace and harmony through sacred music. Informed by alternate cultural paradigms for economics, the book probes deeply into philosophies and practices that already exist within Eastern and Western societies, and offer lessons for our future. The result is an economics that stresses harmony with nature, and balance in social relations. It places an emphasis on community—human sharing and trust—as a platform for our future, not separate from the global economy but integrated into its very foundations. This is a book for all who care: a plan for our sustainable future built from the best of what our humanity is and can offer.
