Author: Kazuhisa KakuraiPublisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
Neutron Scattering Studies on Quantum Spin Systems
Author: Kazuhisa KakuraiNeutron Scattering Studies of Low-dimensional Quantum Spin Systems
Author: Stefan Paul GosulyNeutron Scattering Studies of Low-dimensional Quantum Spin Systems
Author: Nikolay TsyrulinNeutron Scattering Studies of Low-dimensional Quantum Spin Systems
Author: S. P. GosulyNeutron Scattering Studies and Classical Simulations on Low-dimensional Spin Systems
Author: Tom HubermanPublisher:
ISBN:
Category : Antiferromagnetism
Languages : en
Pages : 380
Book Description
Neutron Scattering and Transport Studies of Quantum Materials
Author: Heda ZhangPublisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 0
Book Description
Quantum material is an multi-disciplinary research topic that continues to thrive in recent years. The term Quantum material covers all systems which demonstrate physical phenomena beyond the scope of single-particle, semi-classical/quantum theory. Among many sub-fields of quantum materials, topological systems and strongly correlated systems are two topics which have receive growing attention from the scientific community.We begin with a discussion on a van der Waals magnet VI3 in chapter three. VI3 hosts ferromagnetism on a honeycomb lattice, which was one of the proposed models for topological magnon bands. There have been ample theoretical studies on ferromagnetic honeycomb lattice. However, there has not been any physical realization of such model. In our study, we show that the is a strong anomalous thermal Hall effect in VI3, the underlying mechanism of which is the non-trivial topological nature of the magnon bands.In chapter four, we discuss our transport studies on some magnetic topological metals. The non-zero Berry curvature in the reciprocal space of topological metals can lead to anomalous transverse conductivities (ÎðA, ϳA, ÎłA) in the system. We found large anomalous transverse conductivities in TbMn6Sn6 and verified its intrinsic nature through first-principle calculations. Furthermore, we have found large exchange-bias behavior in TbMn6Sn6, which renders it as a promising system for anomalous Nernst effect based thermoelectric device. We will also discuss the topological Nernst effect observed in Fe3Sn2, which is potentially due to the Skyrmion bubble phase revealed by the Lorentz transmission electron microscopic studies.In chapter five, we discuss our inelastic neutron scattering study on a unique quantum spin chain system in Cu2(OH)3Br. The system hosts alternating ferromagnetic and anti-ferromagnetic spin chains with finite inter-chain couplings. This allows for the coexistence and interactions between magnons and spinons.
Adaptation and Integration in the Social System of Temne Immigrants in Freetown
Author: Michael BantonPublisher:
ISBN:
Category : Immigrants
Languages : en
Pages : 15
Book Description
Neutron Scattering - Magnetic and Quantum Phenomena
Author: Publisher: Elsevier
ISBN: 0128020938
Category : Science
Languages : en
Pages : 534
Book Description
Neutron Scattering - Magnetic and Quantum Phenomena provides detailed coverage of the application of neutron scattering in condensed matter research. The book's primary aim is to enable researchers in a particular area to identify the aspects of their work where neutron scattering techniques might contribute, conceive the important experiments to be done, assess what is required to carry them out, write a successful proposal for one of the major user facilities, and perform the experiments under the guidance of the appropriate instrument scientist. An earlier series edited by Kurt Sköld and David L. Price, and published in the 1980s by Academic Press as three volumes in the series Methods of Experimental Physics, was very successful and remained the standard reference in the field for several years. This present work has similar goals, taking into account the advances in experimental techniques over the past quarter-century, for example, neutron reflectivity and spin-echo spectroscopy, and techniques for probing the dynamics of complex materials of technological relevance. This volume complements Price and Fernandez-Alonso (Eds.), Neutron Scattering - Fundamentals published in November 2013. Covers the application of neutron scattering techniques in the study of quantum and magnetic phenomena, including superconductivity, multiferroics, and nanomagnetism Presents up-to-date reviews of recent results, aimed at enabling the reader to identify new opportunities and plan neutron scattering experiments in their own field Provides a good balance between theory and experimental techniques Provides a complement to Price and Fernandez-Alonso (Eds.), Neutron Scattering - Fundamentals published in November 2013
Neutron Scattering Study of Quantum Phase Transitions InIntegral Spin Chains
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 1007
Book Description
Quite a few low-dimensional magnets are quantum-disordered 'spin liquids' with a characteristic gap in the magnetic excitation spectrum. Among these are antiferromagnetic chains of integer quantum spins. Their generic feature are long-lived massive (gapped) excitations (magnons) that are subject to Zeeman splitting in external magnetic fields. The gap in one of the magnon branches decreases with field, driving a soft-mode quantum phase transition. The system then enters a qualitatively new high-field phase. The actual properties at high fields, particularly the spin dynamics, critically depend on the system under consideration. Recent neutron scattering studies of organometallic polymer crystals NDMAP (Haldane spin chains with anisotropy) and NTENP (dimerized S = 1 chains) revealed rich and unique physics.
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."