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Thermal Fluctuations And Relaxation Processes In Nanomagnets, Coffey William T, Kalmykov Yuri P, Titov Sergei V


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Автор: Coffey William T, Kalmykov Yuri P, Titov Sergei V
Название:  Thermal Fluctuations And Relaxation Processes In Nanomagnets
ISBN: 9789811217272
Издательство: World Scientific Publishing
Классификация:
ISBN-10: 9811217270
Обложка/Формат: Hardback
Страницы: 708
Вес: 1.11 кг.
Дата издания: 21.08.2020
Серия: Physics
Язык: English
Размер: 229 x 152 x 38
Читательская аудитория: Tertiary education (us: college)
Ключевые слова: Statistical physics, SCIENCE / Physics / Condensed Matter,SCIENCE / Physics / Mathematical & Computational,SCIENCE / Physics / Quantum Theory
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Поставляется из: Англии
Описание: Presenting in a coherent and accessible fashion current results in nanomagnetism, this book constitutes a comprehensive, rigorous and readable account, from first principles of the classical and quantum theories underlying the dynamics of magnetic nanoparticles subject to thermal fluctuations.Starting with the Larmor-like equation for a giant spin, both the stochastic (Langevin) equation of motion of the magnetization and the associated evolution (Fokker-Planck) equation for the distribution function of the magnetization orientations of ferromagnetic nanoparticles (classical spins) in a heat bath are developed along with their solution (using angular momentum theory) for arbitrary magnetocrystalline-Zeeman energy. Thus, observables such as the magnetization reversal time, relaxation functions, dynamic susceptibilities, etc. are calculated and compared with the predictions of classical escape rate theory including in the most general case spin-torque-transfer. Regarding quantum effects, which are based on the reduced spin density matrix evolution equation in Hilbert space as is described at length, they are comprehensively treated via the Wigner-Stratonovich formulation of the quantum mechanics of spins via their orientational quasi-probability distributions on a classically meaningful representation space. Here, as suggested by the relevant Weyl symbols, the latter is the configuration space of the polar angles. Hence, one is led, by mapping the reduced density matrix equation onto that space, to a master equation for the quasi-probability evolution akin to the Fokker-Planck equation which may be solved in a similar way. Thus, one may study in a classical-like manner the evolution of observables with spin number ranging from an elementary spin to molecular clusters to the classical limit, viz. a nanoparticle. The entire discussion hinges on the one-to-one correspondence between polarization operators in Hilbert space and the spherical harmonics allied to concepts of spin coherent states long familiar in quantum optics.Catering for the reader with only a passing knowledge of statistical and quantum mechanics, the book serves as an introductory text on a complicated subject where the literature is remarkably sparse.


Introduction To The Theory Of Critical Phenomena: Mean Field, Fluctuations And Renormalization (2Nd Edition)

Автор: Uzunov Dimo I
Название: Introduction To The Theory Of Critical Phenomena: Mean Field, Fluctuations And Renormalization (2Nd Edition)
ISBN: 9814299480 ISBN-13(EAN): 9789814299480
Издательство: World Scientific Publishing
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Цена: 19800.00 р.
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Описание: Presents a comprehensive introduction to the theory of phase transitions and critical phenomena. This title covers a period of more than 100 years of theoretical research of condensed matter phases and phase transitions providing a clear interrelationship with experimental problems.

Fluctuations and Sensitivity in Nonequilibrium Systems

Автор: W. Horsthemke; D. K. Kondepudi
Название: Fluctuations and Sensitivity in Nonequilibrium Systems
ISBN: 3642465102 ISBN-13(EAN): 9783642465109
Издательство: Springer
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Цена: 13974.00 р.
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Описание: This volume contains the invited lectures and a selection of the contributed papers and posters of the workshop on "Fluctuations and Sensitivity in Nonequil ibrium Systems," held at the Joe C. Thompson Conference Center, Un i vers ity of Texas at Austin, March 12-16, 1984. The workshop dealt with stochastic phenomena and sensi- tivity in nonequilibrium systems from a macroscopic point of view. Durin9 the last few years it has been realized that the role of fluctuations is far less trivial in systems far from equilibrium than in systems under thermodynamic equilibrium condi- tions. It was found that random fluctuations often are a determining factor for the state adopted by macroscopic systems and cannot be regarded as secondary effects of minor importance. Further, nonequilibrium systems are also very sensitive to small systematic changes in their environment. The main aims of the workshop were: i) to provide scientists with an occasion to acquaint themselves with the state of the art in fluctuation theory and sensitivity analysis; ii) to provide a forum for the presentation of recent advances in theory and experiment; iii) to bring toge- ther theoreticians and experimentalists in order to delineate the major open problems and to formulate strategies to tackle these problems. The organizing committee of the workshop consisted of W. Horsthemke, O. K. Konde- pudi, G. Dewel, G. Nicolis, I. Prigogine and L. Reichl.

Theory of fluctuations in superconductors

Автор: Larkin, Anatoly Varlamov, Andrei
Название: Theory of fluctuations in superconductors
ISBN: 0198528159 ISBN-13(EAN): 9780198528159
Издательство: Oxford Academ
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Цена: 19008.00 р.
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Описание: This book describes the theory of superconducting fluctuations, which connects two major topics in statistical physics - the theory of phase transitions and the theory of superconductivity. It presents a complete encyclopedia of superconducting fluctuations, summarising the last thirty-five years of work in the field.

Physics of Biomaterials: Fluctuations, Selfassembly and Evolution

Автор: T. Riste; David Sherrington
Название: Physics of Biomaterials: Fluctuations, Selfassembly and Evolution
ISBN: 940107271X ISBN-13(EAN): 9789401072717
Издательство: Springer
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Цена: 30606.00 р.
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Описание: Proceedings of the NATO Advanced Study Institute, Geilo, Norway, March 27-April 6, 1995

Magnetic Excitations and Fluctuations II

Автор: Umberto Balucani; Stephen W. Lovesey; Mario G. Ras
Название: Magnetic Excitations and Fluctuations II
ISBN: 3642731090 ISBN-13(EAN): 9783642731099
Издательство: Springer
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Цена: 12157.00 р.
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Описание: An international workshop on Elementary Excitations and Fluctuations in Magnetic Systems was held in Turin for five days beginning 25 May, 1987. The workshop followed much the same format as the one with the same title held in San Miniato in 1984 (proceedings: Springer Series in-Solid-State Sciences, Vol. 54), that most participants contributed talks and provided papers for the proceedings. While many of the participants had attended the first workshop, 15 of the 40 invited review papers were presented by scientists who had not. The majority of the talks reported theoretical work concerned with the introduction of new techniques. However, experimental work was also well represented, not least because many of the reported theoretical studies were motivated by experimental findings, and a highlight of the workshop was an extremely stimulating session devoted to recent neutron scattering measure- ments, on various systems, that exploited polarization analysis. The fine venue of the workshop, Villa Gualino, with its excellent facili- ties and spacious accommodation, helped to produce a delightful relaxed and friendly atmosphere. For the use of Villa Gualino and significant financial support we are indebted to our host organization, the Institute for Scien- tific Interchange (lSI). Additional financial support came from the Consiglio Nazionale delle Ricerche (CNR), Centro Interuniversitario di Struttura della Material del Ministero della Pubblica Istruzione (CISM-MPI) and Gruppo Nazionale di Struttura della Materia (GNSM-CNR).

Transport and Fluctuations in Granular Fluids

Автор: Andrea Puglisi
Название: Transport and Fluctuations in Granular Fluids
ISBN: 3319102850 ISBN-13(EAN): 9783319102856
Издательство: Springer
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Цена: 7182.00 р.
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Описание: This brief offers a concise presentation of granular fluids from the point of view of non-equilibrium statistical physics.

Fluctuations and Order

Автор: Mark Millonas
Название: Fluctuations and Order
ISBN: 1461284635 ISBN-13(EAN): 9781461284635
Издательство: Springer
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Цена: 16979.00 р.
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Описание: The volume that you have before you is the result of a growing realization that fluctuations in nonequilibrium systems playa much more important role than was 1 first believed.

Empirical Science of Financial Fluctuations

Автор: Hideki Takayasu
Название: Empirical Science of Financial Fluctuations
ISBN: 4431669957 ISBN-13(EAN): 9784431669951
Издательство: Springer
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Цена: 15672.00 р.
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Описание: Financial fluctuations were generally neglected in classical ecnomics and their basic statistical properties have only recently been elucidated in the emerging field of econophysics, a new science that analyzes data using methods developed by statistical physics, such as chaos, fractals, and phase transitions.

Magnetic Excitations and Fluctuations

Автор: S.W. Lovesey; U. Balucani; F. Borsa; V. Tognetti
Название: Magnetic Excitations and Fluctuations
ISBN: 3642823718 ISBN-13(EAN): 9783642823718
Издательство: Springer
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Цена: 16769.00 р.
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Описание: An international workshop on Elementary Excitations and Fluctuations in Magnetic Systems was held in San Miniato, Italy, for five days beginning 28 May, 1984. The workshop comprised eight working sessions that contai- ned a total of 43 invited talks, and 58 scientists were in attendance from 14 countries. Our aim was to review some topics of current interest in the statistical physics of magnetic materials and models, with an emphasis on theoretical studies and confrontations between these and experimental and computer simulation data. book contains summary papers written by the invited speakers, and This the material will be of immediate interest to graduate students and resear- chers engaged in studies of magnetic properties. There is, perhaps, no ef- fective way to record and convey the benefit of the numerous discussions between the participants that are a significant integral feature of a work- shop. The magnificent .venue of the workshop, I Cappuccini, was made availa- ble to us by the.Cassa di Risparmio San Miniato. Financial support for the workshop was received from Consiglio Nazionale delle Ricerche, Universita degli Studi di Firenze and the Gruppo Nazionale Struttura, della Materia. Our administrative load and the burden of preparing the proceedings for publication was made light by the talents of Carla Pardini (CNR, Florence), and Caroline Monypenny and Jane Warren (Rutherford Appleton Laboratory). Fina 11y, we wish to thank all the participants for their attendance and individual contributions to the success of the workshop.


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