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Titlebook: Quantum Magnetism; Ulrich Schollwöck,Johannes Richter,Raymod F. Bisho Book 2004 Springer-Verlag Berlin Heidelberg 2004 Phase Transition.Ph

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书目名称Quantum Magnetism
编辑Ulrich Schollwöck,Johannes Richter,Raymod F. Bisho
视频video
概述Includes supplementary material:
丛书名称Lecture Notes in Physics
图书封面Titlebook: Quantum Magnetism;  Ulrich Schollwöck,Johannes Richter,Raymod F. Bisho Book 2004 Springer-Verlag Berlin Heidelberg 2004 Phase Transition.Ph
描述.The investigation of magnetic systems where quantum effects play a dominant role has become a very active branch of solid-state-physics research in its own right. The first three chapters of the .Quantum Magnetism. survey conceptual problems and provide insights into the classes of systems considered, namely one-dimensional, two-dimensional and molecular magnets. The following chapters introduce the methods used in the field of quantum magnetism, including spin wave analysis, exact diagonalization, quantum field theory, coupled cluster methods and the Betheansatz. The book closes with a chapter on quantum phase transitions and a contribution that puts the wealth of phenomena into the context of experimental solid-state physics. Closing a gap in the literature, this volume is intended both as an introductory text at postgraduate level and as a modern, comprehensive reference for researchers in the field..
出版日期Book 2004
关键词Phase Transition; Phase Transitions; magnetic plateaux; quantum magnetism; quantum phase transition; spin
版次1
doihttps://doi.org/10.1007/b96825
isbn_softcover978-3-642-05976-6
isbn_ebook978-3-540-40066-0Series ISSN 0075-8450 Series E-ISSN 1616-6361
issn_series 0075-8450
copyrightSpringer-Verlag Berlin Heidelberg 2004
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One-dimensional magnetism, particular with models including higher-order exchange interactions (ring exchange for S=1/2 and biquadratic exchange for S=1 systems), with spin-orbital models and mixed spin (ferrimagnetic) chains..The final section is devoted to gapped one-dimensional spin systems in high magnetic field. It desc
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,Quantum magnetism in two dimensions: From semi-classical Néel order to magnetic disorder,with a highly degenerate ground state in the classical limit .→∞. The first one is the famous kagomé lattice where many low-lying singlet excitations are known to arise in the spin gap. The second lattice, called star lattice, is a new example for a quantum paramagnet and has a clear gap to all exci
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Field-theoretical methods in quantum magnetism,rees of freedom leading to a Hubbard or a . model is also discussed. Finally, we apply the abelian bosonization approach to the study of N-leg ladders in amagnetic field, which leads to a further extension of Haldane’s conjecture.
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The coupled cluster method applied to quantum magnetism,tems and we present accurate results for the excitation energies of the spin-half square-lattice . model. We utilise an “extended” SUB2 approximation scheme, and we demonstrate how this approximation may be solved exactly by using Fourier transform methods or, alternatively, by determining and solvi
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Quantum phases and phase transitions of Mott insulators,ch spin gap states can form, and survey recent theories of the quantum phase transitions among these states and magnetically ordered states. We describe the breakdown of the Landau-Ginzburg-Wilson paradigm at these quantum critical points, accompanied by the appearance of emergent gauge excitations.
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