Hidden Order and Exotic Superconductivity in the Heavy Fermion Compound URu2Si2 Book

Hidden Order and Exotic Superconductivity in the Heavy Fermion Compound URu2Si2


  • Author : Ryuji Okazaki
  • Publisher : Springer Science & Business Media
  • Release Date : 2013-11-29
  • Genre: Technology & Engineering
  • Pages : 102
  • ISBN 10 : 9784431545927

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Hidden Order and Exotic Superconductivity in the Heavy Fermion Compound URu2Si2 Excerpt :

In this thesis, the author investigates hidden-order phase transition at T0 = 17.5 K in the heavy-fermion URu2Si2. The four-fold rotational symmetry breaking in the hidden order phase, which imposes a strong constraint on the theoretical model, is observed through the magnetic torque measurement. The translationally invariant phase with broken rotational symmetry is interpreted as meaning that the hidden-order phase is an electronic “nematic” phase. The observation of such nematicity in URu2Si2 indicates a ubiquitous nature among the strongly correlated electron systems. The author also studies the superconducting state of URu2Si2 below Tc = 1.4 K, which coexists with the hidden-order phase. A peculiar vortex penetration in the superconducting state is found, which may be related to the rotational symmetry breaking in the hidden-order phase. The author also identifies a vortex lattice melting transition. This transport study provides essential clues to the underlying issue of quasiparticle dynamics as to whether a quasiparticle Bloch state is realized in the periodic vortex lattice.

Progress in Low Temperature Physics Book

Progress in Low Temperature Physics


  • Author : Anonim
  • Publisher : Elsevier
  • Release Date : 2005-11-03
  • Genre: Science
  • Pages : 502
  • ISBN 10 : 0080460364

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Progress in Low Temperature Physics Excerpt :

A number of interrelated areas of low temperature physics are brought together in this volume. The four topics are presented as separate chapters. First is the study of the Kibble-Zurek mechanism for defect formation following quench cooling of superfluid 3He and its relation to quantum field theory. Properties of heavy fermion materials are described next with special attention to the competition between magnetism and superconductivity. Some of the newest correlated electron systems are discussed and the arguments for possible unconventional nature of the superconducting order parameter are presented for these systems, including the novel coexistence of ferromagnetism and superconductivity. Highly polarized degenerate Fermi liquids are of substantial interest in many areas of physics. The most complete description of observations of thermodynamic and transport phenomena are reviewed here for the case of polarized liquid 3He obtained by rapid melting from a polarized solid and subsequent rapid refrigeration. Properties of the melting curve of 3He, and the related technique of melting curve thermometry are described in detail. · Superfluid 3He and Quantum Field Theory · Large Scale structure of the Universe · Unconventional Superconductivity · Heavy Fermions · Quantum Phase Transitions · Polarized Fermi Liquids · Rapid Melting · 3He Melting Curve · Low Temperature Thermometry

A Study of D density Wave States in Strongly Correlated Electron Systems Book

A Study of D density Wave States in Strongly Correlated Electron Systems


  • Author : Chen-Hsuan Hsu
  • Publisher : Unknown
  • Release Date : 2014
  • Genre: Uncategoriezed
  • Pages : 105
  • ISBN 10 : OCLC:892429753

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A Study of D density Wave States in Strongly Correlated Electron Systems Excerpt :

Particle-hole condensates in the angular momentum l=2 channel, known as d-density wave orders, have been suggested to be realized in strongly correlated electron systems. In this dissertation, we study singlet and triplet $d$-density wave orders with a form factor of d_(x2-y2) as well as a novel topological mixed singlet-triplet d-density wave with a form factor of (i[sigma] d_(x2-y2)+d_(xy)), and discuss the connections of these states to high-temperature superconductors and heavy-fermion materials. In Chapter 2, we discuss the spin susceptibility of the singlet d-density wave, triplet d-density wave, and spin density wave orders with hopping anisotropies. From the numerical calculation, we find nearly vertical dispersion relations for spin excitations with anisotropic incommensurability at low energies in agreement with the inelastic neutron scattering experiments in the pseudogap state of the high-temperature superconductor YBa2Cu3O6.6. The vertical dispersion is a distinct feature of all three density wave states in contrast to the superconducting state, which shows an hourglass shape dispersion experimentally. In Chapter 3, we explore a mixed singlet-triplet d-density wave state in a two-dimensional square lattice, which is topologically nontrivial and exhibits quantum spin Hall effect. We also study the bulk-edge correspondence and Lifshitz transition in the system. In Chapter 4, we show that the skyrmions in the system carry charge 2e and can condense into a superconducting state. The phase transition between the density wave and superconductivity likely leads to deconfined quantum critical points. We suggest connections of this exotic state to the hidden-order state in the heavy-fermion compound URu2Si2. The st-DDW model is generalized to three dimensions in Chapter 5, where we propose a novel pairing mechanism in URu2Si2. We assume the charge 2e skyrmionic spin texture in the mixed singlet-triplet d-density wave state fractionalizes into merons and antimero

Superconductivity Book

Superconductivity


  • Author : Karl-Heinz Bennemann
  • Publisher : Springer Science & Business Media
  • Release Date : 2008-04-25
  • Genre: Technology & Engineering
  • Pages : 1568
  • ISBN 10 : 9783540732532

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Superconductivity Excerpt :

This extensive and comprehensive handbook systematically reviews the basic physics, theory and recent advances in superconductivity. Covering the entire field, this unparalleled resource carefully blends theoretical studies with experimental results to provide an indispensable foundation for further research. Leading researchers, including Nobel laureates, describe the state of the art in conventional and unconventional superconductors. In addition to full-coverage of novel materials and underlying mechanisms, the handbook reflects continued, intense research into electron-phone based superconductivity.

Correlated Electronic States Under Extreme Conditions Book

Correlated Electronic States Under Extreme Conditions


  • Author : Jason Robert Jeffries
  • Publisher : Unknown
  • Release Date : 2007
  • Genre: Uncategoriezed
  • Pages : 156
  • ISBN 10 : 1109966539

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Correlated Electronic States Under Extreme Conditions Excerpt :

The application of high pressures to solids has been, and continues to be, a powerful tool to probe the exotic states of matter found in many solid-state systems. High pressures provide an avenue to cleanly tune fundamental parameters associated with superconductivity, magnetism, and quantum criticality in an attempt to garner information about these novel and poorly understood phenomena. The effects of chemical substitution and/or pressure upon the superconducting and antiferromagnetic ordered states of the CeRh1- xCoxIn5 system, the ferromagnetism in the compound Au4V, the superconducting and "hidden order" phases of the heavy fermion compound URu2Si2 and the related, substituted URu2-xRe xSi2 system, and the superconducting phase of Th have been investigated up to pressures as high as 400 kbar using various techniques.

The NMR Probe of High Tc Materials and Correlated Electron Systems Book

The NMR Probe of High Tc Materials and Correlated Electron Systems


  • Author : Russell E. Walstedt
  • Publisher : Springer
  • Release Date : 2017-10-27
  • Genre: Technology & Engineering
  • Pages : 323
  • ISBN 10 : 9783662555828

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The NMR Probe of High Tc Materials and Correlated Electron Systems Excerpt :

This new edition updates readers in three areas of NMR studies, namely, recent developments in high-Tc materials, heavy fermion systems and actinide oxides are presented. The NMR probe has yielded a vast array of data for solid state materials, corresponding to different compounds, ionic sites, and nuclear species, as well as to a wide variety of experimental conditions. The last two parts of the book are completely new in this edition, while the first part has seen major updates.This edition features the latest developments for high-Tc materials, especially the advances in the area of pseudogap studies are reviewed. An in depth overview of heavy fermion systems is presented in the second part, notably Kondo lattices, quantum critical points and unconventional superconductivity are areas of intense research recently and are covered extensively. Finally, valuable information from NMR studies with actinide oxides will be provided.Ongoing analysis and discussion of NMR data have resulted in a wealth of important insights into the physics of these exotic systems. The aims of this monograph are manyfold. First, it reviews NMR methodology as it has been applied to the different studies. This is addressed to NMR practitioners and to physics laypersons alike. Next, it presents a review of NMR measurements and the wide variety of phenomena which they represent. The third phase is to recount the theoretical model calculations and other proposals which have been put forward to account for these data.

Theory of Fluctuations in Superconductors Book

Theory of Fluctuations in Superconductors


  • Author : Anatoly Larkin
  • Publisher : OUP Oxford
  • Release Date : 2005-01-13
  • Genre: Science
  • Pages : 432
  • ISBN 10 : 9780191523700

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Theory of Fluctuations in Superconductors Excerpt :

This book presents a complete encyclopedia of superconducting fluctuations, summarising the last thirty-five years of work in the field. The first part of the book is devoted to an extended discussion of the Ginzburg-Landau phenomenology of fluctuations in its thermodynamical and time-dependent versions and its various applications. The second part deals with microscopic justification of the Ginzburg-Landau approach and presents the diagrammatic theory of fluctuations. The third part is devoted to a less-detailed review of the manifestation of fluctuations in observables: diamagnetism, magnetoconductivity, various tunneling characteristics, thermoelectricity, and NMR relaxation. The final chapters turn to the manifestation of fluctuations in unconventional superconducting systems: nanodrops, nanorings, Berezinsky-Kosterlitz-Thouless state, quantum phase transition between superconductor and insulator, and thermal and quantum fluctuations in weak superconducting systems. The book ends with a brief discussion on theories of high temperature superconductivity, where fluctuations appear as the possible protagonist of this exciting phenomenon.

The Kondo Problem to Heavy Fermions Book
Score: 4
From 2 Ratings

The Kondo Problem to Heavy Fermions


  • Author : Alexander Cyril Hewson
  • Publisher : Cambridge University Press
  • Release Date : 1997-04-28
  • Genre: Science
  • Pages : 444
  • ISBN 10 : 0521599474

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The Kondo Problem to Heavy Fermions Excerpt :

'a superb introduction to this fascinating field.' Physics Today

Rare Earth Borides Book

Rare Earth Borides


  • Author : Dmytro S. Inosov
  • Publisher : CRC Press
  • Release Date : 2021-10-25
  • Genre: Technology & Engineering
  • Pages : 912
  • ISBN 10 : 9781000345728

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Rare Earth Borides Excerpt :

Rare-earth borides have attracted continuous interest for more than half a century both from the point of view of fundamental condensed matter physics and for practical applications in various fields of engineering. They demonstrate a wealth of unusual electronic and magnetic properties that have been closely investigated in recent decades using advanced spectroscopies and state-of-the-art physical characterization methods. Authored by leading experts in the field, this book features a comprehensive collection of reviews offering a cutting-edge summary of the research on rare-earth borides from various viewpoints. It includes chapters on the growth and characterization of single-crystal and thin-film samples, detailed description of their lattice structure and dynamics, electronic and magnetic properties in the bulk and at the surface, low-temperature ordering phenomena, and theoretical and experimental description of the unusual spectroscopic properties from the perspective of modern x-ray and neutron scattering, Raman spectroscopy, and electron spin resonance. The book will appeal to anyone interested in the physics and chemistry of solids and low-temperature physics, especially to researchers and postgraduate students who study magnetic and electronic properties of rare-earth compounds.

High Magnetic Field Science and Its Application in the United States Book

High Magnetic Field Science and Its Application in the United States


  • Author : National Research Council
  • Publisher : National Academies Press
  • Release Date : 2013-12-25
  • Genre: Science
  • Pages : 232
  • ISBN 10 : 9780309286343

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High Magnetic Field Science and Its Application in the United States Excerpt :

The Committee to Assess the Current Status and Future Direction of High Magnetic Field Science in the United States was convened by the National Research Council in response to a request by the National Science Foundation. This report answers three questions: (1) What is the current state of high-field magnet science, engineering, and technology in the United States, and are there any conspicuous needs to be addressed? (2) What are the current science drivers and which scientific opportunities and challenges can be anticipated over the next ten years? (3) What are the principal existing and planned high magnetic field facilities outside of the United States, what roles have U.S. high field magnet development efforts played in developing those facilities, and what potentials exist for further international collaboration in this area? A magnetic field is produced by an electrical current in a metal coil. This current exerts an expansive force on the coil, and a magnetic field is "high" if it challenges the strength and current-carrying capacity of the materials that create the field. Although lower magnetic fields can be achieved using commercially available magnets, research in the highest achievable fields has been, and will continue to be, most often performed in large research centers that possess the materials and systems know-how for forefront research. Only a few high field centers exist around the world; in the United States, the principal center is the National High Magnetic Field Laboratory (NHMFL). High Magnetic Field Science and Its Application in the United States considers continued support for a centralized high-field facility such as NHFML to be the highest priority. This report contains a recommendation for the funding and siting of several new high field nuclear magnetic resonance magnets at user facilities in different regions of the United States. Continued advancement in high-magnetic field science requires substantial investments in magnets with

Theory Of Superconductivity Book

Theory Of Superconductivity


  • Author : J. Robert Schrieffer
  • Publisher : CRC Press
  • Release Date : 2018-03-05
  • Genre: Science
  • Pages : 352
  • ISBN 10 : 9780429964251

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Theory Of Superconductivity Excerpt :

Theory of Superconductivity is primarily intended to serve as a background for reading the literature in which detailed applications of the microscopic theory of superconductivity are made to specific problems.

Springer Handbook of Microscopy Book

Springer Handbook of Microscopy


  • Author : Peter W. Hawkes
  • Publisher : Springer Nature
  • Release Date : 2019-11-02
  • Genre: Technology & Engineering
  • Pages : 1543
  • ISBN 10 : 9783030000691

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Springer Handbook of Microscopy Excerpt :

This book features reviews by leading experts on the methods and applications of modern forms of microscopy. The recent awards of Nobel Prizes awarded for super-resolution optical microscopy and cryo-electron microscopy have demonstrated the rich scientific opportunities for research in novel microscopies. Earlier Nobel Prizes for electron microscopy (the instrument itself and applications to biology), scanning probe microscopy and holography are a reminder of the central role of microscopy in modern science, from the study of nanostructures in materials science, physics and chemistry to structural biology. Separate chapters are devoted to confocal, fluorescent and related novel optical microscopies, coherent diffractive imaging, scanning probe microscopy, transmission electron microscopy in all its modes from aberration corrected and analytical to in-situ and time-resolved, low energy electron microscopy, photoelectron microscopy, cryo-electron microscopy in biology, and also ion microscopy. In addition to serving as an essential reference for researchers and teachers in the fields such as materials science, condensed matter physics, solid-state chemistry, structural biology and the molecular sciences generally, the Springer Handbook of Microscopy is a unified, coherent and pedagogically attractive text for advanced students who need an authoritative yet accessible guide to the science and practice of microscopy.

Superconductivity Book

Superconductivity


  • Author : Kristian Fossheim
  • Publisher : John Wiley & Sons
  • Release Date : 2005-09-01
  • Genre: Science
  • Pages : 442
  • ISBN 10 : 9780470026434

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Superconductivity Excerpt :

Superconductivity: Physics and Applications brings together major developments that have occurred within the field over the past twenty years. Taking a truly modern approach to the subject the authors provide an interesting and accessible introduction. Brings a fresh approach to the physics of superconductivity based both on the well established and convergent picture for most low-Tc superconductors, provided by the BCS theory at the microscopic level, and London and Ginzburg-Landau theories at the phenomenological level, as well as on experiences gathered in high-Tc research in recent years. Includes end of chapter problems and numerous relevant examples Features brief interviews with key researchers in the field A prominent feature of the book is the use of SI units throughout, in contrast to many of the current textbooks on the subject which tend to use cgs units and are considered to be outdated

Magnetism and Superconductivity Book

Magnetism and Superconductivity


  • Author : Laurent-Patrick Levy
  • Publisher : Springer Science & Business Media
  • Release Date : 2013-06-29
  • Genre: Science
  • Pages : 468
  • ISBN 10 : 9783662042717

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Magnetism and Superconductivity Excerpt :

This up-to-date work presents a modern vision of magnetism and superconductivity covering both microscopic and phenomenological aspects. The basic information is illustrated with the help of current research topics such as the quantum Hall effect or mesoscopic aspects of superconductivity.