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Author : Pieter Bloembergen
Publisher :
ISBN 13 :
Total Pages : 200 pages
Book Rating : 4.:/5 (27 download)
Download or read book An experimental study of the two-dimensional, spin 1/2, heisenb... written by Pieter Bloembergen and published by . This book was released on 19?? with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (487 download)
Download or read book An experimental study of the two-dimensional, spin 1/2, Heisenberg ferromagnet written by and published by . This book was released on 1976 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pieter Bloembergen
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (487 download)
Download or read book An Experimental Study of the Two-dimensional, Spin 1/2, Heisenberg Ferromagnet written by Pieter Bloembergen and published by . This book was released on 1976 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pieter Bloembergen
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (143 download)
Download or read book An Experimental Study of the Two-dimensional Spin 1/2, Heinsenberg Ferromagnet written by Pieter Bloembergen and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A.P. Legrand
Publisher : Springer Science & Business Media
ISBN 13 : 1475796498
Total Pages : 503 pages
Book Rating : 4.4/5 (757 download)
Download or read book Chemical Physics of Intercalation written by A.P. Legrand and published by Springer Science & Business Media. This book was released on 2013-12-11 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conjugated polymers suoh as polyaoetylene (CH)x polyphenylene (C6H4)x' poly thiophene (C4H2S)x' etc., which are insulators in their pristine state, can be brought to the metallic state after "doping" with ohemioal speoies whioh oan be either eleotron donors or I aoceptors. . This doping prooess involves a oharge transfer between the dopant moleoule and the polymer ohain whioh are then supposed to be spatially olose to each other. It follows that the meohanism of doping must be oonsidered as an aotual interoalation process, which will greatly affeot the struotural oharacteristios of the starting material, as well as its morphology, as has been observed during the 2 intercalation of graphite and layered compounds . In parallel with these modifioations, the band struoture of the system changes yielding a new set of eleotronio properties. It is evident therefore that the struotural and eleotronio properties are intimately related, and must be studied simultaneously in the same system to give reliable information. A great number of studies have been devoted to the structural and electronic properties of conjugated polymers after a chemical or 2 electrochemical doping process . Most of these concern the properties of the system for a given dopant concentration. With this approach a universal pioture of the polymer/dopant system is very diffioult to obtain, as a comparison between different experiments is very hazardous. On the other hand, only a small number of measurements have been performed during the continuous electroohemioal doping of various polymers.
Author :
Publisher :
ISBN 13 :
Total Pages : 852 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bastien Dalla Piazza
Publisher : Springer
ISBN 13 : 3319264192
Total Pages : 189 pages
Book Rating : 4.3/5 (192 download)
Download or read book Excitation Spectra of Square Lattice Antiferromagnets written by Bastien Dalla Piazza and published by Springer. This book was released on 2016-01-06 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a qualitative advance in our understanding of quantum effects in layered magnetic materials. The nearest neighbor Heisenberg ferromagnetic ranks among the oldest and most fundamental models of quantum many body effects. It has long been established that in one dimension quantum fluctuations lead to a quantum disordered ground state with fractional excitations called spinons." In two dimensions, the ground state of the Heisenberg model displays static order and to first approximation the dynamics can be described as semi-classical spin waves. Through theoretical advances the author demonstrates that at high energy around particular points in reciprocal space these semi-classical spin-waves deconfine into fractional excitations akin to the one-dimensional spinons. He thereby provides the first explanation of a long-standing experimental observation. In the second half of his thesis Bastien Dalla Piazza develops a unified description of the magnetic excitation spectra of a range of cuprate parent compounds to the high temperature superconductors.
Author : Hung-the Diep
Publisher : World Scientific
ISBN 13 : 9811214158
Total Pages : 750 pages
Book Rating : 4.8/5 (112 download)
Download or read book Frustrated Spin Systems (Third Edition) written by Hung-the Diep and published by World Scientific. This book was released on 2020-06-19 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frustrated spin systems have been first investigated five decades ago. Well-known examples include the Ising model on the antiferromagnetic triangular lattice studied by G H Wannier in 1950 and the Heisenberg helical structure discovered independently by A Yoshimori, J Villainn and T A Kaplan in 1959. However, extensive investigations on frustrated spin systems have really started with the concept of frustration introduced at the same time by G Toulouse and by J Villain in 1977 in the context of spin glasses. The frustration is generated by the competition of different kinds of interaction and/or by the lattice geometry. As a result, in the ground state all bonds are not fully satisfied. In frustrated Ising spin systems, a number of spins behave as free spins. In frustrated vector spin systems, the ground-state configuration is usually non-collinear. The ground state of frustrated spin systems is therefore highly degenerate and new induced symmetries give rise to unexpected behaviors at finite temperatures. Many properties of frustrated systems are still not well understood at present. Theoretically, recent studies shown in this book reveal that established theories, numerical simulations as well as experimental techniques have encountered many difficulties in dealing with frustrated systems. In some sense, frustrated systems provide an excellent testing ground for approximations and theories. Experimentally, more and more frustrated materials are discovered with interesting properties for applications.
Author : Ulrich Kobler
Publisher : World Scientific
ISBN 13 : 9813235500
Total Pages : 962 pages
Book Rating : 4.8/5 (132 download)
Download or read book Experimental Studies Of Boson Fields In Solids written by Ulrich Kobler and published by World Scientific. This book was released on 2018-09-14 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a new understanding of the large amount of experimental results gained in solid state physics during the last seven decades. For more than 160 different materials, data analyses shown in terms of atomistic models (Hamiltonians) have not provided a quantitatively satisfactory description of either excitation spectra or dynamic properties. Instead, the experimental evidences have elaborated that field theories are necessary. However, most experimentalists are not familiar with field theories, and realistic field theories of magnetism are absent.The book illustrates in an empirical way the elements of future field theories of solid state physics with special emphasis on magnetic materials. In contrast to the many available textbooks on quantum field theories that emphasize more on algorithmic formalities rather than referring to the experimental facts, the approach in this book is pragmatic instead of abstract theoretic. This methodical concept considerably facilitates experimentalists to get acquainted with the basic ideas of field theories, even if a ready field theory is not provided by this experimental study.
Author : Peter Fulde
Publisher : Springer Science & Business Media
ISBN 13 : 3642578098
Total Pages : 492 pages
Book Rating : 4.6/5 (425 download)
Download or read book Electron Correlations in Molecules and Solids written by Peter Fulde and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dieser Titel verbindet die Festkörpertheorie mit der Quantenchemie. Neue Konzepte der Vielteilchen-Verarbeitung und Korrelations-Effekte, normale quantenchemische Verfahren mit Projektionstechniken, Greensche Funktionen und Monte-Carlo-Methoden werden erarbeitet. Anwendungsbereiche der Molekültheorie, von Halbleitern, supraleitender high-Tc-Materialien, etc., werden vorgestellt.
Author : Maria Bałanda
Publisher : MDPI
ISBN 13 : 3038977101
Total Pages : 166 pages
Book Rating : 4.0/5 (389 download)
Download or read book Molecular Magnets written by Maria Bałanda and published by MDPI. This book was released on 2019-03-19 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular magnets show many properties not met in conventional metallic magnetic materials, i.e. low density, transparency to electromagnetic radiation, sensitivity to external stimuli such as light, pressure, temperature, chemical modification or magnetic/electric fields, and others. They can serve as “functional” materials in sensors of different types or be applied in high-density magnetic storage or nanoscale devices. Research into molecule-based materials became more intense at the end of the 20th century and is now an important branch of modern science. The articles in this Special Issue, written by physicists and chemists, reflect the current work on molecular magnets being carried out in several research centers. Theoretical papers in the issue concern the influence of spin anisotropy in the low dimensional lattice of the resulting type of magnet, as well as thermodynamics and magnetic excitations in spin trimers. The impact of external pressure on structural and magnetic properties and its underlying mechanisms is described using the example of Prussian blue analogue data. The other functionality discussed is the magnetocaloric effect, investigated in coordination polymers and high spin clusters. In this issue, new molecular magnets are presented: (i) ferromagnetic high-spin [Mn6] single-molecule magnets, (ii) solvatomagnetic compounds changing their structure and magnetism dependent on water content, and (iii) a family of purely organic magnetic materials. Finally, an advanced calorimetric study of anisotropy in magnetic molecular superconductors is reviewed.
Author : Nikolai M. Plakida
Publisher : Springer Science & Business Media
ISBN 13 : 3642784062
Total Pages : 236 pages
Book Rating : 4.6/5 (427 download)
Download or read book High-Temperature Superconductivity written by Nikolai M. Plakida and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-Temperature Superconductors provides an up-to-date and comprehensive review of the properties of these fascinating materials. Much has been learned about the behavior and mechanism of this novel type of superconductivity over the past five years, but many questions remain unanswered. This book gives an invaluable survey which will help students and researchers to consolidate their knowledge and build upon it. A large number of illustrations and tables give valuable information for specialists. A critical comparison of different theoretical models involving strong electron correlations, spin fluctuations, phonons and excitons provides a background for understanding modern trends in the theory of high-temperature superconductivity.
Author : D. Gatteschi
Publisher : Springer Science & Business Media
ISBN 13 : 9401132542
Total Pages : 413 pages
Book Rating : 4.4/5 (11 download)
Download or read book Magnetic Molecular Materials written by D. Gatteschi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the major challenges of science in the last few years of the second millennium is learning how to design materials which can fulfill specific tasks. Ambitious as it may be, the possibilities of success are not ne~li~ble provided that all the different expertises merge to overcome the limits of eXIsting disciplines and forming new paradigms science. The NATO Advanced Research Workshop on "Magnetic Molecular Materials" was organized with the above considerations in mind in order to determine which are the most appropriate synthetic strategies, experimental techniques of investigation, and theoretical models which are needed in order to develop new classes of magnetic materials which are based on molecules rather than on metallic or ionic lattices. Why molecules? The answer may be obvious: molecular chemistry in principle fine can tune the structures and the properties of complex aggregates, and nature already provides a large number of molecular aggregates which can perform the most disparate functions. The contributions collected in this book provide a rather complete view of the current research accomplishments of magnetic molecular materials. There are several different synthetic approaches which are followed ranging from purely organic to inorganic materials. Some encouraging successes have already been achieved, even if the critical temperatures below which magnetic order is observed still are in the range requiring liquid helium.
Author : Arun Kumar Singh
Publisher : CRC Press
ISBN 13 : 1000783006
Total Pages : 260 pages
Book Rating : 4.0/5 (7 download)
Download or read book Emerging Two Dimensional Materials and Applications written by Arun Kumar Singh and published by CRC Press. This book was released on 2022-11-21 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details 2D nanomaterials, and their important applications—including recent developments and related scalable technologies crucial to addressing strong societal demands of energy, environmental protection, and worldwide health concerns—are systematically documented. It covers syntheses and structures of various 2D materials, electrical transport in graphene, and different properties in detail. Applications in important areas of energy harvesting, energy storage, environmental monitoring, and biosensing and health care are elaborated. Features: Facilitates good understanding of concepts of emerging 2D materials and its applications. Covers details of highly sensitive sensors using 2D materials for environmental monitoring. Outlines the role of 2D materials in improvement of energy harvesting and storage. Details application in biosensing and health care for the realization of next-generation biotechnologies for personalized health monitoring and so forth. Provides exclusive coverage of inorganic 2D MXenes compounds. This book is aimed at graduate students and researchers in materials science and engineering, nanoscience and nanotechnology, and electrical engineering.
Author :
Publisher :
ISBN 13 :
Total Pages : 864 pages
Book Rating : 4.3/5 (91 download)
Download or read book Physics Briefs written by and published by . This book was released on 1992 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David P. Landau
Publisher : Springer Science & Business Media
ISBN 13 : 3642555225
Total Pages : 225 pages
Book Rating : 4.6/5 (425 download)
Download or read book Computer Simulation Studies in Condensed-Matter Physics XV written by David P. Landau and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over fifteen years ago, because of the tremendous increase in the power and utility of computer simulations, The University of Georgia formed the first institutional unit devoted to the use of simulations in research and teach ing: The Center for Simulational Physics. As the international simulations community expanded further, we sensed a need for a meeting place for both experienced simulators and neophytes to discuss new techniques and recent results in an environment which promoted lively discussion. As a consequence, the Center for Simulational Physics established an annual workshop on Re cent Developments in Computer Simulation Studies in Condensed Matter Physics. This year's workshop was the fifteenth in this series, and the con tinued interest shown by the scientific community demonstrates quite clearly the useful purpose that these meetings have served. The latest workshop was held at The University of Georgia, March 11-15, 2002, and these proceedings provide a "status report" on a number of important topics. This volume is published with the goal of timely dissemination of the material to a wider audience. We wish to offer a special thanks to IBM Corporation and to the National Science Foundation for partial support of this year's workshop. This volume contains both invited papers and contributed presentations on problems in both classical and quantum condensed matter physics. We hope that each reader will benefit from specialized results as well as profit from exposure to new algorithms, methods of analysis, and conceptual devel opments. Athens, GA, USA D. P.
Author :
Publisher :
ISBN 13 :
Total Pages : 1688 pages
Book Rating : 4.3/5 (555 download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1968-05 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
