Hidden Order And Exotic Superconductivity In The Heavy Fermion Compound Uru2si2

Author : Ryuji Okazaki
Publisher : Springer Science & Business Media
Page : 114 pages
File Size : 40,9 Mb
Release : 2013-11-29
Category : Technology & Engineering
ISBN : 9784431545927

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Hidden Order and Exotic Superconductivity in the Heavy-Fermion Compound URu2Si2 by Ryuji Okazaki Pdf

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.

Author : Anonim
Publisher : Elsevier
Page : 424 pages
File Size : 54,8 Mb
Release : 2023-11-23
Category : Science
ISBN : 9780443193750

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Handbook on the Physics and Chemistry of Rare Earths by Anonim Pdf

Handbook on the Physics and Chemistry of Rare Earths: Including Actinides, Volume 64, the latest release in this continuous series that covers all aspects of rare earth science, including chemistry, life sciences, materials science and physics, presents interesting chapters on a variety of topics, with this release including sections on Structure and properties of Ln2M3Ge5 compounds, Giant magnetocaloric effect materials, Lanthanide-based single-molecule magnets, and Magnetic Refrigeration with Lanthanide-Based Materials. Presents up-to-date overviews and new developments in the field of rare earths, covering both their physics and chemistry Contains individual chapters that are comprehensive and broad, along with critical reviews Provides contributions from highly experienced, invited experts

Author : Anonim
Publisher : Unknown
Page : 1094 pages
File Size : 42,6 Mb
Release : 2017
Category : Physics
ISBN : 8210379456XXX

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Journal of the Physical Society of Japan by Anonim Pdf

Author : Hsiang-Hsi Kung
Publisher : Springer Nature
Page : 165 pages
File Size : 48,9 Mb
Release : 2021-12-08
Category : Technology & Engineering
ISBN : 9783030893323

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Collective Excitations in the Antisymmetric Channel of Raman Spectroscopy by Hsiang-Hsi Kung Pdf

This thesis contains three breakthrough results in condensed matter physics. Firstly, broken reflection symmetry in the hidden-order phase of the heavy-fermion material URu2Si2 is observed for the first time. This represents a significant advance in the understanding of this enigmatic material which has long intrigued the condensed matter community due to its emergent long range order exhibited at low temperatures (the so-called “hidden order”). Secondly and thirdly, a novel collective mode (the chiral spin wave) and a novel composite particle (the chiral exciton) are discovered in the three dimensional topological insulator Bi2Se3. This opens up new avenues of possibility for the use of topological insulators in photonic, optoelectronic, and spintronic devices. These discoveries are facilitated by using low-temperature polarized Raman spectroscopy as a tool for identifying optically excited collective modes in strongly correlated electron systems and three-dimensional topological insulators.

Author : Anonim
Publisher : Elsevier
Page : 502 pages
File Size : 50,9 Mb
Release : 2005-11-03
Category : Science
ISBN : 0080460364

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Progress in Low Temperature Physics by Anonim Pdf

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

Author : David A. Cardwell,David C. Larbalestier,Aleksander Braginski
Publisher : CRC Press
Page : 472 pages
File Size : 45,5 Mb
Release : 2022-07-05
Category : Science
ISBN : 9781482282047

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Handbook of Superconductivity by David A. Cardwell,David C. Larbalestier,Aleksander Braginski Pdf

This is the first of three volumes of the extensively revised and updated second edition of the Handbook of Superconductivity. The past twenty years have seen rapid progress in superconducting materials, which exhibit one of the most remarkable physical states of matter ever to be discovered. Superconductivity brings quantum mechanics to the scale of the everyday world where a single, coherent quantum state may extend over a distance of metres, or even kilometres, depending on the size of a coil or length of superconducting wire. Viable applications of superconductors rely fundamentally on an understanding of this intriguing phenomena and the availability of a range of materials with bespoke properties to meet practical needs. This first volume covers the fundamentals of superconductivity and the various classes of superconducting materials, which sets the context and background for Volumes 2 and 3. Key Features: Covers the depth and breadth of the field Includes contributions from leading academics and industry professionals across the world Provides hands-on guidance to the manufacturing and processing technologies A comprehensive reference, this handbook is suitable for both graduate students and practitioners in experimental physics, materials science and multiple engineering disciplines, including electronic and electrical, chemical, mechanical, metallurgy and others.

Author : Corneliu Florin Miclea
Publisher : Cuvillier Verlag
Page : 166 pages
File Size : 52,7 Mb
Release : 2008-08-26
Category : Science
ISBN : 9783736927087

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Investigation of superconducting order parameters in heavy-fermion and low-dimensional metallic systems under pressure by Corneliu Florin Miclea Pdf

The understanding of new emerging unconventional ground states is a great challenge for experimental and theoretical solid-state physicists. New ground states are developing, where different energy scales compete, leading to a high sensitivity of the system to external tuning parameters like doping, pressure or magnetic field. The exploration of superconductivity proved to be a fascinating and challenging scientific undertaking. Discovered by H. Kammerlingh Onnes in 1911, prior to the development of the quantum theory of matter, superconductivity was defying a microscopic theory for more than four decades until the BCS theory was formulated in 1957 by J. Bardeen, L. N. Cooper and J. R. Schrieffer. Superconductivity of most of the simple metals or metallic alloys is well described within the frame of the BCS scenario, however, in the last thirty years numerous new superconducting materials were found to exhibit exotic properties not accounted for by the BCS theory. Among them are included the high-Tc compounds, the heavy-fermion superconductors and as well the organic superconductors. It was the purpose of this work to probe different facets of superconductivity in heavy-fermion and in low-dimensional metallic compounds. This dissertation is divided into six chapters. In Chapter 1 are outlined the basic theoretical concepts later needed for the analysis of the experimental results. Chapter 2 briefly introduces the experimental techniques with a special focus on the new pressure cells developed during this study and used for the measurements presented in Chapters 3 to 5. In Chapter 3 the possible realization of the inhomogeneous superconducting FFLO state in CeCoIn5 is studied by specific heat measurements under hydrostatic pressure, while in Chapter 4 the results of ac specific heat experiments on UBe13 under uniaxial pressure are presented. The ambient pressure properties as well as the results obtained by resistivity measurements under hydrostatic pressure on the one-dimensional metallic compounds TlxV6S8 are discussed in Chapter 5. At the end, Chapter 6 summarizes and concludes this work.

Author : Anonim
Publisher : Unknown
Page : 1178 pages
File Size : 44,6 Mb
Release : 1998-04
Category : Metallurgy
ISBN : CORNELL:31924077956815

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Metals Abstracts by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 1044 pages
File Size : 45,9 Mb
Release : 2007
Category : Dissertations, Academic
ISBN : STANFORD:36105131546371

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Dissertation Abstracts International by Anonim Pdf

Author : Anatoly Larkin,Andrei Varlamov
Publisher : OUP Oxford
Page : 432 pages
File Size : 48,5 Mb
Release : 2005-01-13
Category : Science
ISBN : 9780191523700

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Theory of Fluctuations in Superconductors by Anatoly Larkin,Andrei Varlamov Pdf

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.

Author : Alexander Cyril Hewson
Publisher : Cambridge University Press
Page : 476 pages
File Size : 42,7 Mb
Release : 1997-04-28
Category : Science
ISBN : 0521599474

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The Kondo Problem to Heavy Fermions by Alexander Cyril Hewson Pdf

The behaviour of magnetic impurities in metals has posed problems to challenge the condensed matter theorist over the past 30 years. This book deals with the concepts and techniques which have been developed to meet this challenge, and with their application to the interpretation of experiments. This book will be of interest to condensed matter physicists, particularly those interested in strong correlation problems. The detailed discussions of advanced many-body techniques should make it of interest to theoretical physicists in general.

Author : Laurent-Patrick Levy
Publisher : Springer Science & Business Media
Page : 470 pages
File Size : 54,5 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783662042717

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Magnetism and Superconductivity by Laurent-Patrick Levy Pdf

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.

Author : J. Robert Schrieffer
Publisher : CRC Press
Page : 352 pages
File Size : 47,8 Mb
Release : 2018-03-05
Category : Science
ISBN : 9780429964251

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Theory Of Superconductivity by J. Robert Schrieffer Pdf

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.

Author : Stephen Edkins
Publisher : Springer
Page : 187 pages
File Size : 44,5 Mb
Release : 2017-08-31
Category : Technology & Engineering
ISBN : 9783319659756

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Visualising the Charge and Cooper-Pair Density Waves in Cuprates by Stephen Edkins Pdf

This thesis reports on the use of scanning tunnelling microscopy to elucidate the atomic-scale electronic structure of a charge density wave, revealing that it has a d-symmetry form factor, hitherto unobserved in nature. It then details the development of an entirely new class of scanned probe: the scanning Josephson tunnelling microscope. This scans the Josephson junction formed between a cuprate superconducting microscope tip and the surface of a cuprate sample, thereby imaging the superfluid density of the sample with nanometer resolution. This novel method is used to establish the existence of a spatially modulated superconducting condensate, something postulated theoretically over half a century ago but never previously observed.

Author : D L Cox,A Zawadowski
Publisher : CRC Press
Page : 364 pages
File Size : 42,7 Mb
Release : 1999-03-18
Category : Science
ISBN : 0748408894

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Exotic Kondo Effects in Metals by D L Cox,A Zawadowski Pdf

This provides a major review of the two-level system Kondo model, as applied to metallic glasses, nanoscale devices and some doped semiconductors; and the quadripolar and magnetic two-channel Kondo models developed for rare-earth and actinide ions with crystal splitting metals. These contrast with the simple single-channel model, and allow the study of non-Fermi liquid physics. This book forms a valuable and unique source of information for statistical and condensed matter physicists and graduate students. Key Features: * An invaluable and unique source of information on this highly popular area of condensed matter physics * Based upon a special edition of the Advances in Physics journal * Magnetic impurities in metals present a major challenge to condensed matter physicists, for which a strong starting point has long been the early insights of Kondo into the resistance medium