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Author : Verena Sabine Kargl
Publisher :
ISBN 13 :
Total Pages : 123 pages
Book Rating : 4.:/5 (162 download)
Download or read book Magnetic Properties of Low Dimensional Spin Systems written by Verena Sabine Kargl and published by . This book was released on 2006 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nyrissa S. Rogado
Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (547 download)
Download or read book Synthesis, Structure and Magnetic Properties of Low Dimensional Spin Systems in the 3d Transition Metal Oxides and Superconductivity in MgB2 written by Nyrissa S. Rogado and published by . This book was released on 2003 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shinichiro Seki
Publisher : Springer Science & Business Media
ISBN 13 : 4431540911
Total Pages : 135 pages
Book Rating : 4.4/5 (315 download)
Download or read book Magnetoelectric Response in Low-Dimensional Frustrated Spin Systems written by Shinichiro Seki and published by Springer Science & Business Media. This book was released on 2012-08-27 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electric control of magnetic properties, or inversely, magnetic control of dielectric properties in solids, is called a magnetoelectric effect and has long been investigated from the point of view of both fundamental physics and potential application. Magnetic and dielectric properties usually show minimal coupling, but it recently has been discovered that magnetically induced ferroelectricity in some spiral magnets enables remarkably large and versatile magnetoelectric responses. To stabilize such helimagnetism, magnetic frustration (competition between different magnetic interactions) is considered the key. In the present work, two of the most typical frustrated spin systems—triangular lattice antiferromagnets and edge-shared chain magnets—have systematically been investigated. Despite the crystallographic simplicity of target systems, rich magnetoelectric responses are ubiquitously observed. The current results published here offer a useful guideline in the search for new materials with unique magnetoelectric functions, and also provide an important basis for a deeper understanding of magnetoelectric phenomena in more complex systems.
Download or read book Magnetic Properties of Low Dimensional Systems written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Simon Nils Grossjohann
Publisher : Cuvillier Verlag
ISBN 13 : 373693419X
Total Pages : 168 pages
Book Rating : 4.7/5 (369 download)
Download or read book Static and Dynamic Properties of low dimensional Quantum Spin Systems written by Simon Nils Grossjohann and published by Cuvillier Verlag. This book was released on 2010-08-17 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: In my thesis, static and dynamic properties of low-dimensional spin models were studied by means of a state of the art QMC method (SSE). As one among many numerical algorithms (e.g. DMRG, ED), the QMC proved to be a very flexible and high performance tool with access to dynamic correlation functions at finite temperatures and finite magnetic fields within the thermodynamic limit1. After detailed introduction of the QMC’s basic implementation, I provided yet unpublished information about the measurement of transverse (and longitudinal) imaginary time correlation functions for the spin S Heisenberg model. In addition to that, complications of the analytic continuation to the real axis were explained and two common Maximum Entropy algorithms (Bryan and Meshkov) introduced briefly. In my thesis, both algorithms have been implemented and contrasted in regard to their performance and quality of the continuation, clearly favoring Bryan’s method which is a standard least square algorithm based on Newton iterations with however highly optimized search directions in the multi-dimensional solution space.
Author : Leopoldo Maximo Falicov
Publisher : Berlin ; New York : Springer-Verlag
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (318 download)
Download or read book Magnetic Properties of Low-dimensional Systems II written by Leopoldo Maximo Falicov and published by Berlin ; New York : Springer-Verlag. This book was released on 1990 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of New Low-Dimensional Spin Systems in Vanadium Oxides written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation we reported our experimental investigation of the magnetic properties of nine low-dimensional vanadium compounds. Two of these materials are completely new (Pb2V5O12 and Pb2VO(PO4)2) and were found during our search for new low-dimensional vanadium oxides. Among the other seven vanadium compounds studied, three were physically investigated for the first time (Sr2VO(PO4)2, BaZnVO(PO4)2 and SrZnVO(PO4)2). Two had hitherto only preliminary, and wrongly interpreted, susceptibility measurements reported in the literature (Sr2V3O9 and Ba2V3O9) while the remaining two (Li2VOSiO4 and Li2VOGeO4) were previously investigated in some detail but the interpretation of the data was controversial. We investigated the magnetic properties of these materials by means of magnetic susceptibility and specific heat (Cp(T)) measurements (as well as single crystal ESR measurements in the case of Sr2V3O9). We synthesized the samples necessary for our physical studies. That required a search of the optimal synthesis conditions for obtaining pure, high quality, polycrystalline samples. Single crystals of Sr2V3O9 and Pb2VO(PO4)2 were also successfully grown. Pb2VO(PO4)2, BaZnVO(PO4)2, SrZnVO(PO4)2, Li2VOSiO4 and Li2VOGeO4 were found to be experimental examples of frustrated square-lattice systems which are described by the J1-J2 model. We found that Li2VOSiO4 and Li2VOGeO4 posses a weakly frustrated antiferromagnetic square lattice while Pb2VO(PO4)2, BaZnVO(PO4)2 and SrZnVO(PO4)2 form a more strongly frustrated ferromagnetic square lattice. Pb2V5O12 is structurally and compositionally related to the two dimensional A2+V4+nO2n+1 vanadates. Its structure consists of layers formed by edge- and corner-shared square VO5 pyramids. The basic structural units are plaquettes consisting of six corner-shared pyramids pointing in the same direction, which form a spin lattice of novel geometry.
Author : Adam Iaizzi
Publisher : Springer
ISBN 13 : 3030018032
Total Pages : 170 pages
Book Rating : 4.0/5 (3 download)
Download or read book Magnetic Field Effects in Low-Dimensional Quantum Magnets written by Adam Iaizzi and published by Springer. This book was released on 2018-11-28 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is a tour-de-force combination of analytic and computational results clarifying and resolving important questions about the nature of quantum phase transitions in one- and two-dimensional magnetic systems. The author presents a comprehensive study of a low-dimensional spin-half quantum antiferromagnet (the J-Q model) in the presence of a magnetic field in both one and two dimensions, demonstrating the causes of metamagnetism in such systems and providing direct evidence of fractionalized excitations near the deconfined quantum critical point. In addition to describing significant new research results, this thesis also provides the non-expert with a clear understanding of the nature and importance of computational physics and its role in condensed matter physics as well as the nature of phase transitions, both classical and quantum. It also contains an elegant and detailed but accessible summary of the methods used in the thesis—exact diagonalization, Monte Carlo, quantum Monte Carlo and the stochastic series expansion—that will serve as a valuable pedagogical introduction to students beginning in this field.
Author : J.L. Morán-López
Publisher : Springer Science & Business Media
ISBN 13 : 0306471116
Total Pages : 465 pages
Book Rating : 4.3/5 (64 download)
Download or read book Physics of Low Dimensional Systems written by J.L. Morán-López and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oaxaca, Mexico, was the place chosen by a large international group of scientists to meet and discuss on the recent advances on the understanding of the physical prop- ties of low dimensional systems; one of the most active fields of research in condensed matter in the last years. The International Symposium on the Physics of Low Dim- sions took place in January 16-20, 2000. The group of scientists converging into the historical city of Oaxaca, in the state of the same name, had come from Argentina, Chile, Venezuela, several places in Mexico, Canada, U. S. A. , England, France, Italy, Germany, Russia, and Switzerland. The presentations at the workshop provided sta- of-art reviews of many of the most important problems, currently under study. Equally important to all the participants in the workshop was the fact that we had come to honor a friend, Hans Christoph Siegmann, on his sixty-fifth birthday. This Festschrift recognizes the intellectual leadership of Professor Siegmann in the field and as a sincere homage to his qualities as an exceptional friend, college and mentor. Those who have had the privilege to work closely with Hans Christoph have been deeply impressed by his remarkable analytic mind as well as by his out of range kindness and generosity. Hans Christoph has contributed to the understanding of the difficult and very important problem of the magnetic properties of finite systems: surfaces, thin films, heterostructures.
Author : L.J. de Jongh
Publisher : Springer Science & Business Media
ISBN 13 : 9400918607
Total Pages : 430 pages
Book Rating : 4.4/5 (9 download)
Download or read book Magnetic Properties of Layered Transition Metal Compounds written by L.J. de Jongh and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two decades low-dimensional (low-d) physics has matured into a major branch of science. Quite generally we may define a system with restricted dimensionality d as an object that is infinite only in one or two spatial directions (d = 1 and 2). Such a definition comprises isolated single chains or layers, but also fibres and thin layers (films) of varying but finite thickness. Clearly, a multitude of physical phenomena, notably in solid state physics, fall into these categories. As examples, we may mention: • Magnetic chains or layers (thin-film technology). • Metallic films (homogeneous or heterogeneous, crystalline, amorphous or microcristalline, etc.). • I-d or 2-d conductors and superconductors. • Intercalated systems. • 2-d electron gases (electrons on helium, semiconductor interfaces). • Surface layer problems (2-d melting of monolayers of noble gases on a substrate, surface problems in general). • Superfluid films of ~He or 'He. • Polymer physics. • Organic and inorganic chain conductors, superionic conductors. • I-d or 2-d molecular crystals and liquid crystals. • I-d or 2-d ferro- and antiferro electrics.
Author : Leopoldo Maximo Falicov
Publisher : Berlin ; New York : Springer-Verlag
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.3/5 (91 download)
Download or read book Magnetic Properties of Low-dimensional Systems II written by Leopoldo Maximo Falicov and published by Berlin ; New York : Springer-Verlag. This book was released on 1990 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pierre Bouillot
Publisher : Springer Science & Business Media
ISBN 13 : 3642338089
Total Pages : 104 pages
Book Rating : 4.6/5 (423 download)
Download or read book Statics and Dynamics of Weakly Coupled Antiferromagnetic Spin-1/2 Ladders in a Magnetic Field written by Pierre Bouillot and published by Springer Science & Business Media. This book was released on 2012-12-14 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis shows how a combination of analytic and numerical techniques, such as a time dependent and finite temperature Density Matrix Renormalization Group (DMRG) technique, can be used to obtain the physical properties of low dimensional quantum magnets with an unprecedented level of accuracy. A comparison between the theory and experiment then enables these systems to be used as quantum simulators; for example, to test various generic properties of low dimensional systems such as Luttinger liquid physics, the paradigm of one dimensional interacting quantum systems. Application of these techniques to a material made of weakly coupled ladders (BPCB) allowed the first quantitative test of Luttinger liquids. In addition, other physical quantities (magnetization, specific heat etc.), and more remarkably the spins-spin correlations – directly measurable in neutron scattering experiments – were in excellent agreement with the observed quantities. We thus now have tools to quantitatiively assess the dynamics for this class of quantum systems.
Author : H. T. Diep
Publisher : World Scientific
ISBN 13 : 9814440744
Total Pages : 644 pages
Book Rating : 4.8/5 (144 download)
Download or read book Frustrated Spin Systems written by H. T. Diep and published by World Scientific. This book was released on 2013 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers all principal aspects of currently investigated frustrated systems, from exactly solved frustrated models to real experimental frustrated systems, going through renormalization group treatment, Monte Carlo investigation of frustrated classical Ising and vector spin models, low-dimensional systems, spin ice and quantum spin glass. The reader can OCo within a single book OCo obtain a global view of the current research development in the field of frustrated systems.This new edition is updated with recent theoretical, numerical and experimental developments in the field of frustrated spin systems. The first edition of the book appeared in 2005. In this edition, more recent works until 2012 are reviewed. It contains nine chapters written by researchers who have actively contributed to the field. Many results are from recent works of the authors.The book is intended for postgraduate students as well as researchers in statistical physics, magnetism, materials science and various domains where real systems can be described with the spin language. Explicit demonstrations of formulas and full arguments leading to important results are given where it is possible to do so."
Author : Christopher Mennerich
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (244 download)
Download or read book Low Dimensional Spin Systems Studied in High Magnetic Fields written by Christopher Mennerich and published by . This book was released on 2008 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Leopoldo Maximo Falicov
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (42 download)
Download or read book Magnetic Properties of Low-dimensional Systems written by Leopoldo Maximo Falicov and published by . This book was released on 1986 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Field Electron Magnetic Resonance in Complex Correlated Spin Systems written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we used ESR to investigate magnetic properties of low D vandium and copper oxides in which small quantum spins are arranged in 1D chains and 2D layers. The thesis covers five different low dimensional spin systems. They turned out to be experimental reliazation of some of the most intersiting theoritical models in the field of quantum magnetism.
Author : Paul M. Lahti
Publisher : Taylor & Francis
ISBN 13 : 1351434330
Total Pages : 751 pages
Book Rating : 4.3/5 (514 download)
Download or read book Magnetic Properties of Organic Materials written by Paul M. Lahti and published by Taylor & Francis. This book was released on 2023-01-20 with total page 751 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an extensive overview of the last three decades of research on the structures and magnetic behaviors of organic and organometallic substances-building a solid foundation for future research into applications of molecular materials based on organic paramagnetic and polymeric systems. Provides the essential body of knowledge for an organically oriented materials science of electronic materials.
