Author: Tom HubermanPublisher:
ISBN:
Category : Antiferromagnetism
Languages : en
Pages : 380
Book Description
Neutron Scattering Studies and Classical Simulations on Low-dimensional Spin Systems
Author: Tom HubermanPublisher:
ISBN:
Category : Antiferromagnetism
Languages : en
Pages : 380
Book Description
Neutron Scattering Studies of Low-dimensional Quantum Spin Systems
Author: Stefan Paul GosulyNeutron Scattering Studies of Low-dimensional Quantum Spin Systems
Author: S. P. GosulyNeutron Scattering Studies of Low-dimensional Quantum Spin Systems
Author: Nikolay TsyrulinNeutron Scattering Studies of Low Dimensional Magnetic Systems
Author: Neutron Scattering Studies on Low-dimensional Quantum Magnets
Author: Chiron Jeeb MukherjeePublisher:
ISBN:
Category : Antiferromagnetism
Languages : en
Pages : 418
Book Description
Neutron Scattering Studies on Quantum Spin Systems
Author: Kazuhisa KakuraiUsing X-ray and Neutron Scattering to Study the Dynamics of Low-dimensional Systems
Author: A. C. WaltersPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The theoretical and experimental study of low-dimensional systems has dominated much of modern condensed matter physics. Such systems present a range of different phenomena which are not observed in more isotropic, three-dimensional materials. This thesis constitutes the study of the excitations of two types of low-dimensional system: the magnetic excitations in the one-dimensional S = 1/2 antiferromagnetic chain compound Sr2CuO3 as studied using inelastic neutron scattering, and the phonons in quasi-two-dimensional graphite intercalation compounds CaC6 and BaC6 studied using inelastic X-ray scattering. Initially an introduction to the vast field of low-dimensional systems is provided, followed by a description of the neutron and X-ray scattering technique. Spinon excitations in Sr2CuO3 have been measured up to ≈ 600 meV, and are found to be well-described by the Heisenberg model. A new version of the magnetic form factor for Cu2+ in Sr2CuO3 provides an explanation for the considerable reduction in the measured inelastic neutron scattering intensity, which may have significant consequences for past and future work on other related materials. The phonons in superconducting CaC6 (Tc = 11.5 K) are found to be in reasonable agreement with Density Functional Perturbation Theory calculations, but the measured dispersions in non-superconducting BaC6 are significantly different to those predicted. No direct evidence for electron-phonon coupling is found in either compound. It is concluded that the X-ray data supports the validity of the theoretical description of CaC6, but the use of significantly inaccurate lattice parameters for BaC6 in the calculation may provide an explanation of the poor agreement in this case.
Frustrated Spin Systems
Author: H. T. DiepPublisher: World Scientific
ISBN: 9814440744
Category : Science
Languages : en
Pages : 644
Book Description
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."
Frontiers Of Neutron Scattering - Proceedings Of The Seventh Summer School On Neutron Scattering
Author: Albert FurrerPublisher: World Scientific
ISBN: 9814596825
Category : Technology & Engineering
Languages : en
Pages : 271
Book Description
This book provides ideas on what neutron scattering could look like in the next millennium. In particular, nonconventional, unusual or innovative neutron scattering experiments (from both the scientific and the instrumental point of view) are described which either have novel applications or provide a new insight into science and technology. Chapters on theoretical aspects are adequately included. The scientific and technical areas cover the following topics: novel neutron scattering techniques and perspectives in neutron scattering instrumentation (including sample environment); soft condensed matter, particularly colloids and polymers; materials science and industrial applications; structure and dynamics of multilayers and nanocrystalline materials; dynamical aspects and quantum effects in molecular magnets; strongly correlated electron systems, with emphasis on dynamic correlations in low-dimensional magnets. All these topics are thoroughly introduced and discussed by acknowledged experts.