Download or read book Ab initio Theory of Magnetic Ordering written by Eduardo Mendive Tapia and published by Springer Nature. This book was released on 2020-01-03 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many technological applications exploit a variety of magnetic structures, or magnetic phases, to produce and optimise solid-state functionality. However, most research advances are restricted to a reduced number of phases owing to computational and resource constraints. This thesis presents an ab-initio theory to efficiently describe complex magnetic phases and their temperature-dependent properties. The central assumption is that magnetic phases evolve slowly compared with the underlying electronic structure from which they emerge. By describing how the electronic structure adapts to the type and extent of magnetic order, a theory able to describe multi-spin correlations and their effect on the magnetism at finite temperature is obtained. It is shown that multi-spin correlations are behind the temperature and magnetic field dependence of the diverse magnetism in the heavy rare earth elements. Magnetically frustrated Mn-based materials and the effect of strain are also investigated. These studies demonstrate that the performance of solid-state refrigeration can be enhanced by multi-spin effects.

Download or read book Ab Initio Investigations of Magnetic Properties of Ultrathin Transition Metal Films on 4d Substrates written by Ali Al-Zubi and published by Forschungszentrum Jülich. This book was released on 2010 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook on the Physics and Chemistry of Rare Earths written by and published by Elsevier. This book was released on 2011-09-22 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This continuing authoritative series deals with the chemistry, materials science, physics and technology of the rare earth elements in an integrated manner. Each chapter is a comprehensive, up-to-date, critical review of a particular segment of the field. The work offers the researcher and graduate student a complete and thorough coverage of this fascinating field. REVIEW: "Highly experienced authors have written each review usually at a level suitable for advanced postgraduate students and research workers from a variety of fields. With the great richness of information involving references to other review articles written from different points of view, the books are an important reference source and should be on the shelves of most libraries."-- Journal of Applied Crystallography · Authoritative · Comprehensive · Up-to-date · Critical

Download or read book Materials Modelling Using Density Functional Theory written by Feliciano Giustino and published by Oxford University Press. This book was released on 2014 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explains the fundamental ideas of density functional theory, and how this theory can be used as a powerful method for explaining and even predicting the properties of materials with stunning accuracy.

Download or read book Electron Correlations and Materials Properties written by A. Gonis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume, the proceedings of a 1998 international workshop, provides experimental evidence of the effects of correlation on the physical, chemical, and mechanical properties of materials, as well as the theoretical/computational methodology that has been developed for their study.

Download or read book Atomistic Spin Dynamics written by Olle Eriksson and published by Oxford University Press. This book was released on 2017 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to provide a theoretical foundation and an understanding of atomistic spin-dynamics (ASD), and to give examples of where the atomistic Landau-Lifshitz-Gilbert equation can and should be used. As argued in the text, a description of magnetism in an atomistic way is very natural and allows for an interpretation of experimental results in a clear and deep way. This description also allows for calculations, from first principles, of all parameters needed to perform the spin-dynamics simulations, without using experimental results as input to the simulations. As shown in the book, we are now at a very exciting situation, where it is possible to perform accurate and efficient atomistic simulations on a length- and time-scale which is balancing on the edge of what is experimentally possible. In this way, ASD simulations can both validate and be validated by state-of-the art experiments, and ASD simulations also have the possibility to act as a predictive tool that is able to explain the magnetization dynamics in experimentally inaccessible situations. The purpose of this book has been to communicate technically relevant concepts. An even larger motivation is to communicate an inspiration to magnetism and magnetization dynamics, and the emerging technological fields that one may foresee, e.g. in magnonics, solitonics and skyrmionics.

Download or read book Progress in Physical Chemistry Volume 3 written by Franz Michael Dolg and published by Oldenbourg Verlag. This book was released on 2011-11-22 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Physical Chemistry is a collection of recent »Review Articles« published in the »Zeitschrift für Physikalische Chemie«. The third volume of the series "Progress in Physical Chemistry" comprises 27 articles, most of them with review character, written by the members of the Priority Program (SPP) 1145 of the German Research Foundation (DFG).

Download or read book Magnetism in Complex Systems from Ab Initio Theory written by Lukas Severin and published by . This book was released on 1993 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solid Solutions in Silicate and Oxide systems written by C.A. Geiger and published by The Mineralogical Society of Great Britain and Ireland. This book was released on 2001-01-01 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory of Itinerant Electron Magnetism written by Jürgen Kübler and published by Oxford University Press. This book was released on 2017-03-23 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. 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.

Download or read book Quantum Criticality in Condensed Matter written by Janusz Jedrzejewski and published by World Scientific. This book was released on 2015-07-23 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises 8 articles written by lecturers of 50th Karpacz Winter School of Theoretical Physics and their collaborators. The contributing lecturers are outstanding researchers, and experts in various fields of physics, in particular in condensed matter, quantum phase transitions and quantum critical phenomena. The articles reflect the contents of the lectures given for school participants and cover various aspects of quantum phase transitions and quantum critical phenomena, from experimental to mathematical ones. For those wishing to get acquainted with the subject, extensive lists of references are provided in the articles. Contents:The Enigma of the Pseudogap Phase of the Cuprate Superconductors (Debanjan Chowdhury and Subir Sachdev)Resonant Spin Excitations in Unconventional Heavy Fermion Superconductors and Kondo Lattice Comppounds (Peter Thalmeier and Alireza Akbari)Quantum Critical Heavy Fermion Metal YbRh2Si2 (Gertrud Zwicknagl)Universality and Convergence of Energy Scales at Quantum Critical Points in Local and Lattice Models (A C Hewson, D J G Crow and Y Nishikawa)Beyond Particles: Unparticles in Strongly Correlated Electron Matter (Philip W Phillips)Fidelity Approach to Quantum Phase Transitions in Quantum Ising Model (Bogdan Damski)Dynamics of Quantum Phase Transitions: Quantum Kibble-Zurek Mechanism (Jacek Dziarmaga)Theory of Temporal Fluctuations in Isolated Quantum Systems (L Campos Venuti) Readership: This book is suitable for graduate students and researchers who are interested in condensed matter, quantum phase transitions and quantum critical phenomena. Key Features:Reviews of hot topics in condensed matter physicsUnique, original presentations of discussed topicsProminent contributorsKeywords:Pseudogap Phase;Cuprate Superconductors;Heavy Fermion Superconductors;Kondo Lattice Compounds;Heavy Fermion Metal;Quantum Critical Points;Universality;Unparticles;Strongly Correlated Electrons;Fidelity;Quantum Phase Transitions;Quantum Ising Model;Dynamics of Quantum Phase Transitions;Quantum Kibble-Zurek Mechanism;Temporal Fluctuations;Isolated Quantum Systems

Download or read book Magnetism in Heavy Fermion Systems written by Harry B Radousky and published by World Scientific. This book was released on 2000-10-25 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetism in Heavy Fermion Systems is a review volume which covers an important subset of topics in the field of heavy fermion and non-Fermi liquid physics. It summarizes much of the experimental information in these areas, and includes an article which discusses theoretical interpretations of the complex magnetic behavior of heavy fermion systems. The topics covered include heavy fermion superconductivity, muon spin relaxation in small-moment heavy fermions, neutron scattering from heavy fermions, random localized magnetism in heavy fermions, and magnetism in Pr-containing cuprates. One feature of the book which should be helpful to graduate students and new workers in the field is the extensive references and a separate list of review articles. Contents:Introduction (D E MacLaughlin)Heavy Fermion Superconductors (L Zhang & R N Shelton)Muon Spin Relaxation Studies of Small-Moment Heavy Fermion Systems (R H Heffner)Neutron Scattering from Heavy Fermions (R A Robinson)ƒ-Electronic and Magnetic Behavior Between Atomiclike and Fully Itinerant: Random Localized Magnetism and Heavy Fermions (B R Cooper)Magnetism in Pr-Containing Cuprates (H B Radousky) Readership: Graduate students and researchers in condensed matter physics. Keywords:Reviews:“This book does serve as an excellent starting point for a variety of approaches to the problems of heavy fermion systems.”RIC News

Download or read book Interacting Electrons written by Richard M. Martin and published by Cambridge University Press. This book was released on 2016-06-30 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent progress in the theory and computation of electronic structure is bringing an unprecedented level of capability for research. Many-body methods are becoming essential tools vital for quantitative calculations and understanding materials phenomena in physics, chemistry, materials science and other fields. This book provides a unified exposition of the most-used tools: many-body perturbation theory, dynamical mean field theory and quantum Monte Carlo simulations. Each topic is introduced with a less technical overview for a broad readership, followed by in-depth descriptions and mathematical formulation. Practical guidelines, illustrations and exercises are chosen to enable readers to appreciate the complementary approaches, their relationships, and the advantages and disadvantages of each method. This book is designed for graduate students and researchers who want to use and understand these advanced computational tools, get a broad overview, and acquire a basis for participating in new developments.

Download or read book Handbook of Materials Modeling written by Sidney Yip and published by Springer Science & Business Media. This book was released on 2007-11-17 with total page 2903 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first reference of its kind in the rapidly emerging field of computational approachs to materials research, this is a compendium of perspective-providing and topical articles written to inform students and non-specialists of the current status and capabilities of modelling and simulation. From the standpoint of methodology, the development follows a multiscale approach with emphasis on electronic-structure, atomistic, and mesoscale methods, as well as mathematical analysis and rate processes. Basic models are treated across traditional disciplines, not only in the discussion of methods but also in chapters on crystal defects, microstructure, fluids, polymers and soft matter. Written by authors who are actively participating in the current development, this collection of 150 articles has the breadth and depth to be a major contributor toward defining the field of computational materials. In addition, there are 40 commentaries by highly respected researchers, presenting various views that should interest the future generations of the community. Subject Editors: Martin Bazant, MIT; Bruce Boghosian, Tufts University; Richard Catlow, Royal Institution; Long-Qing Chen, Pennsylvania State University; William Curtin, Brown University; Tomas Diaz de la Rubia, Lawrence Livermore National Laboratory; Nicolas Hadjiconstantinou, MIT; Mark F. Horstemeyer, Mississippi State University; Efthimios Kaxiras, Harvard University; L. Mahadevan, Harvard University; Dimitrios Maroudas, University of Massachusetts; Nicola Marzari, MIT; Horia Metiu, University of California Santa Barbara; Gregory C. Rutledge, MIT; David J. Srolovitz, Princeton University; Bernhardt L. Trout, MIT; Dieter Wolf, Argonne National Laboratory.

Download or read book Magnetic Properties of Rare Earth Metals written by R. Elliott and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rare earths have a unique place among the elements. Although very much alike chemically and in most phy~ical properties they each have very different and striking magnetic properties. The reason, of course, lies in their 4f electrons which determine the magnetic properties but have little effect on other chemical and physical behaviour. Although they are not rare, some indeed are among the more common heavy elements in the earth's crust, the difficulty of separation has meant that their intricate magnetic properties have only recently been unravelled. Now, however, the general pattern of their magnetism is well charted and the underlying theory is well understood. Both are thoroughly summarised in this book. It provides an excellent example of the kind of extensive synthesis which is possible with modem solid state physics. it represents only a high plateau in the ascent to complete understanding. But It will become clear to the reader that while the overall position is satisfactory there are many details still to be elucidated experimentally and much to be done theoretically before all the underlying forces are identified and estimated from a priori calculations. It is hoped that the book will provide a useful stimulus in this direction. It should also be of use to those who are interested in related disciplines, for example the rare earth compounds, or the transition metals. In addition rare earths promise to be important technologically as alloy constituents.

Download or read book Many body Theory of Correlated Fermion Systems written by José M Arias and published by World Scientific. This book was released on 1998-05-30 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structure of matter is intimately related to the fundamental role played by many-fermion systems. The development in the last few decades of the microscopic many-body theory of correlated fermion systems has been a fertile ground not only for spectacular achievements in basic science in various areas of research, but also for technological applications. Among the numerous phenomena discovered and studied in systems of many fermions, one can cite the superconductivity in metals, the superfluidity in 3He, nuclear matter and nuclei, the quantum Hall effect, the giant resonances in nuclei, the Anderson location and the metal–insulator transition, hole and electron diffusion in doped semiconductors, etc. All these phenomena can be understood only in terms of correlations occurring in many-fermion systems, and the formulation of the correct microscopic theory of each phenomenon has marked a milestone in pure science as well as the starting point for the exploitation of its potential technological applications. It is likely that in the future further developments will take place in this field of basic science. The Hispalensis International School is a summer school aimed mainly at young physicists, both theoreticians and experimentalists, engaged in research work at the predoctoral or recent postdoctoral level. The objective of the School provide an opportunity for participants to come into contact with experienced researchers and hear their clear account of the state of the art of many-body theories in nuclear physics, as well as in related fields, and the main future lines of development. Contents:A Microscopic Theory of Magnetic Order in Strongly Correlated Quantum Spin Lattices (R F Bishop & D J J Farnell)Translationally Invariant Coupled Cluster Method in Finite Nuclei (R Guardiola et al)Many-Body Theory of Electron Gas, Quantum Dots and Metal Clusters (E Lipparini)Electrons in Mesoscopic Systems (J Martorell)Microscopic Calculations on Normal Helium-3 at Zero Temperature (S Fantoni & S Moroni)Quantum Transport in Strongly Correlated Systems (R Malfliet)Stochastic Approaches to Out-of-Equilibrium Dynamics (Ph Chomaz)Symmetries in Nuclear Models (P Van Isacker)Many–Body Approximations to Nuclear Structure Problems (J L Egido)Monte–Carlo Shell–Model Calculations (T Otsuka et al)The Dyson Equation Approach to Many–Body Green's Functions (P Schuck et al)Relativisitic Thomas–Fermi Description of Collective Modes in Droplets of Nuclear Matter (C da Providencia et al)Quasiparticles and Collective Excitations in the Quark–Gluon Plasma (J P Blaizot)Nonperturbative Study of Hadron Structure Using Lattice QCD (J W Negele) Readership: Condensed-matter, nuclear and atomic physicists. Keywords: