Properties of the Electron Gas in a Magnetic Field and Their Implications F Heories of the Matter PDF Download
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Author: I. (Kbh. Univ. Niels Bohr Institutet) Fushiki
Publisher:
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Category :
Languages : en
Pages :
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Author: I. (Kbh. Univ. Niels Bohr Institutet) Fushiki
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Joshua Zak
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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The dynamics of electrons in semiconductors and metals in constant electric and magnetic fields was investigated. The research has concentrated on two problems: the motion of electrons in a constant electric field in both a finite and infinite range, and the significance of the magnetic symmetry for a Bloch electron in a constant magnetic field. For the finite range electric field problem a number of models were solved. The numerical results in the case of a periodic potential given by a cosine are of particular interest. For this model a detailed dependence of the energy gap on the electric field strength was obtained. The case of an infinite range electric field has been approached on the basis of spectral theory. For the magnetic field an attempt has been made to reconsider the irreducible representations of the magnetic translation group in order to investigate the significance of the magnetic symmetry. (Author).
Author: Jürgen Kübler
Publisher: Oxford University Press
ISBN: 0191565423
Category : Science
Languages : en
Pages : 494
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This book, in the broadest sense, is an application of quantum mechanics and statistical mechanics to the field of magnetism. Under certain well described circumstances, an immensely large number of electrons moving in the solid state of matter will collectively produce permanent magnetism. Permanent magnets are of fundamental interest, and magnetic materials are also 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 local density functional approximation. The emphasis is on realistic magnets, for which the equations describing the many electron problem can only be solved by using computers. The great, recent and continuing improvements of computers are, to a large extent, responsible for the progress in the field. Along with a detailed introduction to the density functional theory, this book presents representative computational methods and provides the reader with a complete computer programme for the determination of the electronic structure of a magnet on a PC. 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. Finally, an attempt is made to relate the rich thermodynamic properties of magnets to the ab initio results originating from the electronic structure.
Author: Patrik Fazekas
Publisher: World Scientific
ISBN: 9812386270
Category : Science
Languages : en
Pages : 794
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Book Description
This volume attempts to fill the gap between standard introductions to solid state physics, and textbooks which give a sophisticated treatment of strongly correlated systems. Starting with the basics of the microscopic theory of magnetism, one proceeds with relatively elementary arguments to such topics of current interest as the Mott transition, heavy fermions, and quantum magnetism. The basic approach is that magnetism is one of the manifestations of electronOCoelectron interaction, and its treatment should be part of a general discussion of electron correlation effects. Though the text is primarily theoretical, a large number of illustrative examples are brought from the experimental literature. There are many problems, with detailed solutions. The book is based on the material of lectures given at the Diploma Course of the International Center for Theoretical Physics, Trieste, and later at the Technical University and the R. EAtvAs University of Budapest, Hungary. Sample Chapter(s). Chapter 1.1: Magnetism and Other Effects of Electron-Electron Interaction (483 KB). Chapter 1.2: Sources of Magnetic Fields (311 KB). Chapter 1.3: Getting Acquainted: Magnetite (692 KB). Chapter 1.4: Variety of Correlated Systems: An Outline of the Course (307 KB). Contents: Atoms, Ions, and Molecules; Crystal Field Theory; Mott Transition and Hubbard Model; Mott Insulators; Heinsenberg Magnets; Itinerant Electron Magnetism; Ferromagnetism in Hubbard Models; The Gutzwiller Variational Method; The Correlated Metallic State; Mixed Valence and Heavy Fermions; Quantum Hall Effect; Hydrogen Atom; Single-Spin-Flip Ansatz; Gutzwiller Approximation; SchriefferOCoWolff Transformation. Readership: Graduate students and researchers in condensed matter physics."
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Category : Aeronautics
Languages : en
Pages : 538
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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Category : Nuclear energy
Languages : en
Pages : 1080
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Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1680
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Author:
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Category : Electrical engineering
Languages : en
Pages : 1088
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Author: Gabriele Giuliani
Publisher: Cambridge University Press
ISBN: 1139471589
Category : Science
Languages : en
Pages : 779
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Book Description
Modern electronic devices and novel materials often derive their extraordinary properties from the intriguing, complex behavior of large numbers of electrons forming what is known as an electron liquid. This book provides an in-depth introduction to the physics of the interacting electron liquid in a broad variety of systems, including metals, semiconductors, artificial nano-structures, atoms and molecules. One, two and three dimensional systems are treated separately and in parallel. Different phases of the electron liquid, from the Landau Fermi liquid to the Wigner crystal, from the Luttinger liquid to the quantum Hall liquid are extensively discussed. Both static and time-dependent density functional theory are presented in detail. Although the emphasis is on the development of the basic physical ideas and on a critical discussion of the most useful approximations, the formal derivation of the results is highly detailed and based on the simplest, most direct methods.
Author:
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Category : Electric engineering
Languages : en
Pages : 1146
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