Magnetic Systems with Competing Interactions


Book Description

This book is intended for postgraduate students as well as researchers in various areas of physics such as statistical physics, magnetism and materials sciences. The content of the book covers mainly frustrated spin systems with possible applications in domains where physical systems can be mapped into the spin language. Pedagogical effort has been made to make each chapter to be self-contained, comprehensible for researchers who are not really involved in the field. Basic methods are given in detail.




Localization, Interaction, and Transport Phenomena


Book Description

When we first had the idea of organizing the International Conference on Localization, Interaction, and Transport Phenomena in Impure Metals we expected to bring together at most a hundred physicists. The fact that more than a hundred and fifty participated clearly shows that the topic of the meeting was of great interest to an important fraction of the solid state physics community. In fact, remembering that the localization problem is already a quarter of a century old, it is quite amazing to see how, during the last five years, new and very successful theoretical models emerged which were confirmed by sometimes ingenious experiments. The number of groups involved in the study of localization or related problems in the transport properties of matter even seems to be increasing. The main purpose of this conference was to review the present status of activities in the localization field and hopefully to stimulate new ideas. A study of the Conference Proceedings ascertains that we were successful in reaching these two goals. Moreover, the presence of the authors of the about ninety contributed papers published in the supplement volume assured the very lively atmosphere which characterizes successful conferences. We think that this was the most important ingredient for achieving the second goal in particular. We thank our sponsors for their support, which was given unreluctantly and generously. Especially, we gratefully acknowledge the hospitality of the PTB and the city of Braunschweig during the time of the meeting.







50 Years of Anderson Localization


Book Description

This unique volume celebrates the five decades of the impact of Anderson localization on modern physics. In addition to the historical perspective on its origin, it provides a comprehensive description of the experimental and theoretical aspects of Anderson localization.




Simple Models of Magnetism


Book Description

For hundreds of years, models of magnetism have been pivotal in the understanding and advancement of science and technology, from the Earth's interpretation as a magnetic dipole to quantum mechanics, statistical physics, and modern nanotechnology. This book is the first to envision the field of magnetism in its entirety. It complements a rich literature on specific models of magnetism and provides an introduction to simple models, including some simple limits of complicated models. The book is written in an easily accessible style, with a limited amount of mathematics, and covers a wide range of quantum-mechanical, finite-temperature, micromagnetic and dynamical models. It deals not only with basic magnetic quantities, such as moment, Curie temperature, anisotropy, and coercivity, but also with modern areas such as nanomagnetism and spintronics, and with 'exotic' themes, as exemplified by the polymer analogy of magnetic phase transitions. Throughout the book, a sharp line is drawn between simple and simplistic models, and much space is devoted to discuss the merits and failures of the individual model approaches.




Models of Itinerant Ordering in Crystals


Book Description

Models of Itinerant Ordering in Crystals is devoted to the mathematical description of interesting phenomena which occur in solids, such as ferromagnetism, antiferromagnetism and superconductivity. Superconductivity and its interaction with ferro and antiferromagnetism is of special importance since over the last 15 years the temperature of superconductivity existence has been raised from 15-20 K to 100 K, which will allow in the near future numerous practical applications of this phenomenon. Although the book is written in a rather rigorous mathematical language it is made easy to read by detailed derivation for those having only an undergraduate background in physics. Key Features: - New field of research - Common formalism for superconductivity and magnetism - Easy and simple models - Easy reading which includes all derivations - Good for graduate students and young researchers - A new field of research - Common formalism for superconductivity and magnetism - Easy reading and simple models, which includes all derivations




Magnetic Heterostructures


Book Description

Heterostructures consist of combinations of different materials, which are in contact through at least one interface. Magnetic heterostructures combine different physical properties which do not exist in nature. This book provides the first comprehensive overview of an exciting and fast developing field of research, which has already resulted in numerous applications and is the basis for future spintronic devices.




Magnetoelectric Interaction Phenomena in Crystals


Book Description

In the quest for higher data density in information technology manipulation of magnetization by other means than magnetic fields has become an important challenge. This lead to a startling revival of the magnetoelectric effect, which characterizes induction of a polarization by a magnetic field or of a magnetization by an electric field. The magnetoelectric crosslink of material properties opens just those degrees of freedom which are needed for the mutual control of magnetic and electric states. The book gives a state-of-the-art review on magnetoelectrics research, classifies current research tendencies, and points out possible future trends. Novel compounds and growth techniques and new theoretical concepts for the understanding of magnetoelectric coupling phenomena are introduced. Highlights are the discovery of "gigantic" magnetoelectric effects which are strong enough to trigger electric or magnetic phase transitions; the concept of magnetochirality; and development "structural" magnetoelectric effects in artificial multiphase compounds. The book is addressed to condensed-matter physicists with a particular focus on experts in highly correlated systems.




Functional Materials and Electronics


Book Description

This informative book focuses on newly developed functional materials and their applications for electronic and spintronic devices. Electronic devices have become a part of our daily modern life, involving mobile phones, data storage, computers, and satellites, and there is relentless growth in microelectronics. This volume covers the topics of oxide materials for electronics devices, new materials, and new properties, especially in newly developed research areas, such as oxide magnetic semiconductors and two-dimensional electron gas. Key features: Emphasizes functional materials for electronic devices, including two-dimensional materials, two-dimensional electron gas, multiferroic materials, memory materials, sensor materials, and spintronic materials. Describes the basics as well as new developments of these functional materials and devices.