Spin 1 NMR

Table of Contents 1 The Basic Physics of Spin-1 Systems . . . . . . . . . . . . . . . . . . . . 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 General Introduction .

Author: N. Chandrakumar

Publisher: Springer Science & Business Media

ISBN: 9783642610899

Category: Science

Page: 122

View: 143


Statics and Dynamics of Weakly Coupled Antiferromagnetic Spin 1 2 Ladders in a Magnetic Field

Spin-1/2. Ladders. The physics of quantum spin systems depends strongly on their microscopic characteristics. In fact, a large variety of phenomena can appear depending on the local spin S, the type of interaction and the geometry of ...

Author: Pierre Bouillot

Publisher: Springer Science & Business Media

ISBN: 9783642338083

Category: Computers

Page: 98

View: 103


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.

Spin Dynamics

7, 11(fl) kzdfl) §|'¢p(flP)' §2-¢P(flP) ' ' ' prr prs Prr 07? p|"1> p|0> p|-1> P|+3/2> P|+1/2> operator for a rotation of one or more spins through the angle [Sp 1 I ' about the axis 91 cos (pp + 9.' sln ¢P operator for the rotation of ...

Author: Malcolm H. Levitt

Publisher: John Wiley & Sons

ISBN: 9781118681848

Category: Science

Page: 744

View: 723


Spin Dynamics: Basics of Nuclear Magnetic Resonance, Second Edition is a comprehensive and modern introduction which focuses on those essential principles and concepts needed for a thorough understanding of the subject, rather than the practical aspects. The quantum theory of nuclear magnets is presented within a strong physical framework, supported by figures. The book assumes only a basic knowledge of complex numbers and matrices, and provides the reader with numerous worked examples and exercises to encourage understanding. With the explicit aim of carefully developing the subject from the beginning, the text starts with coverage of quarks and nucleons and progresses through to a detailed explanation of several important NMR experiments, including NMR imaging, COSY, NOESY and TROSY. Completely revised and updated, the Second Edition features new material on the properties and distributions of isotopes, chemical shift anisotropy and quadrupolar interactions, Pake patterns, spin echoes, slice selection in NMR imaging, and a complete new chapter on the NMR spectroscopy of quadrupolar nuclei. New appendices have been included on Euler angles, and coherence selection by field gradients. As in the first edition, all material is heavily supported by graphics, much of which is new to this edition. Written for undergraduates and postgraduate students taking a first course in NMR spectroscopy and for those needing an up-to-date account of the subject, this multi-disciplinary book will appeal to chemical, physical, material, life, medical, earth and environmental scientists. The detailed physical insights will also make the book of interest for experienced spectroscopists and NMR researchers. • An accessible and carefully written introduction, designed to help students to fully understand this complex and dynamic subject • Takes a multi-disciplinary approach, focusing on basic principles and concepts rather than the more practical aspects • Presents a strong pedagogical approach throughout, with emphasis placed on individual spins to aid understanding • Includes numerous worked examples, problems, further reading and additional notes Praise from the reviews of the First Edition: "This is an excellent book... that many teachers of NMR spectroscopy will cherish... It deserves to be a ‘classic’ among NMR spectroscopy texts." NMR IN BIOMEDICINE "I strongly recommend this book to everyone...it is probably the best modern comprehensive description of the subject." ANGEWANDTE CHEMIE, INTERNATIONAL EDITION

Nuclear Magnetic Resonance

The NMR signals of insensitive nuclear spins can be enhanced by transferring polarization from a more sensitive ... the INEPT and DEPT experiments were used for the coherence transfer via heteronuclear J-coupling between spin-1/2 and ...

Author: G. A. Webb

Publisher: Royal Society of Chemistry

ISBN: 9780854043521

Category: Reference

Page: 620

View: 529


As a spectroscopic method, nuclear magnetic resonance (NMR) has seen spectacular growth over the past two decades, both as a technique and in its applications. Today the applications of NMR span a wide range of scientific disciplines, from physics to biology to medicine. Each volume of Nuclear Magnetic Resonance comprises a combination of annual and biennial reports which together provide comprehensive coverage of the literature on this topic. This Specialist Periodical Report reflects the growing volume of published work involving NMR techniques and applications, in particular NMR of natural macromolecules which is covered in two reports: "NMR of Proteins and Nucleic Acids" and "NMR of Carbohydrates, Lipids and Membranes". For those wanting to become rapidly acquainted with specific areas of NMR, this title provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an invaluable source of current methods and applications. Volume 34 covers literature published from June 2003 to May 2004. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.

Modern Condensed Matter Physics

80 60 40 20 0 0.0 0.5 1.0 1.5 Figure 17.10 The spin-dynamical structure factor of an antiferromagnetic spin-1 chain measured from inelastic neutron scattering. The vertical axis is energy in units of meV, while the horizontal axis is ...

Author: Steven M. Girvin

Publisher: Cambridge University Press

ISBN: 9781107137394

Category: Science

Page: 720

View: 836


Comprehensive and accessible coverage from the basics to advanced topics in modern quantum condensed matter physics.

Frustrated Spin Systems

A second model which displays extended quantum criticality induced by frustration is the spin-1 bilinear-biquadratic chain (9) with a biquadratic coupling constant β > 1. In this regime, frustration manifests itself and the classical ...

Author: H. T. Diep

Publisher: World Scientific

ISBN: 9789814440745

Category: Science

Page: 644

View: 130


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."

Spin 2004

It is established that in the reaction to + “He – p + °He one of the “classical” incoherence inequalities of the Bell type for the sum of two diagonal components of the correlation tensor is necessarily violated, 1.

Author: Franco Bradamante

Publisher: World Scientific

ISBN: 9789814480482

Category: Science

Page: 1064

View: 691


This comprehensive volume covers the most recent advances in the field of spin physics, including the latest research in high energy and nuclear physics and the study of nuclear spin structure. The comprehensive coverage also includes polarized proton and electron acceleration and storage as well as polarized ion sources and targets. Many significant new results and achievements on the different topics considered at the symposium are presented in this book for the first time. Contents: Present Understanding of the Nucleon Spin Structure (A Metz)Understanding Transversity: Present and Future (V Barone)Results and Future Prospects for Muon (g - 2) (B L Roberts)First Results from RHIC Spin Program and Future Prospects (N Saito)Speculations in Hadron Spectroscopy (J M Richard)Nucleon Form Factors (K de Jager)Experimental Status of the GDH Sum Rule (H Arends)Polarized Structure Functions with Neutrino Beams (S Forte)Higher Twists Resummation in Inclusive and Semi-Inclusive Spin-Dependent DIS (O V Teryaev)A New Angular Momentum Sum Rule (E Leader)Single Spin Asymmetry Measurements for π0 Inclusive Productions in p + p↑ → π0 + X and π- + p↑ → π0+ X Reactions at 70 and 40 GeV Respectively (S B Nurushev)Polarisation in the eRHIC Electron (Positron) Ring (D P Barber)Polarisation Build Up in COMPASS 6LiD Target (J Koivuniemi)and other papers (a total of 170 contributions) Readership: Researchers and graduate students in spin physics, including experimental, theoretical and accelerator physics. Keywords:Spin;Fundamental Symmetries;QCD;Nuclear Physics;Hadronic Physics;Polarized Targerts;Polarized Beams;PolarimetryKey Features:

Quantum Enhanced Sensing Based on Time Reversal of Entangling Interactions

2.2 Phases of a spin-1 system. As a three level system, a spin-1 accommodates two distinct phases, e.g. φ1 = φ0 − φ↑ and φ2 = φ0 − φ↓ as indicated. The decomposition into a Larmor phase contribution, φL = φ2 − φ1, and spinor phase, ...

Author: Daniel Linnemann

Publisher: Springer

ISBN: 9783319960081

Category: Science

Page: 165

View: 209


Quantum mechanics entails effects like superpositions and entanglement, which have no classical counterparts. From a technological standpoint these counterintuitive quantum aspects can be viewed as an unexploited resource that can be harnessed to support various tasks, e.g. in the domains of computation, communication, and metrology. In many applications, however, the potential of nonclassical states cannot practically be exploited due to detection inefficiencies. The authors address this limitation by experimentally realizing a novel detection scheme in which entangling interactions are time reversed. In this way, nonclassical many-particle states are disentangled, allowing them to be detected in a robust and technically feasible manner. In the context of quantum metrology, these nonlinear readout techniques extend the class of entangled probe states that can be leveraged for sensing applications without being limited by finite detector resolution. The authors present an active atom interferometer, where both the entangled state preparation and disentangling readout involve parametric amplification. This “SU(1,1)” interferometer is implemented with the help of spinor Bose–Einstein condensates, where amplification is implemented by atomic collisions leading to spin exchange.

New Trends in Statistical Physics of Complex Systems

the spin-1/2 Ising model with the triplet interaction on a kagomé lattice [8] does not display a phase transition at all. In the present work, we will consider and exactly solve the mixed spin-1/2 and spin-S Ising model with the triplet ...

Author: Antonio M. Scarfone

Publisher: MDPI

ISBN: 9783038974697

Category: Mathematics

Page: 203

View: 972


This book is a printed edition of the Special Issue "New Trends in Statistical Physics of Complex Systems" that was published in Entropy