Emergent Superconductivity In Low Dimensions
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Emergent Superconductivity In Low Dimensions
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Author : Diane Ansermet
language : en
Publisher: Springer
Release Date : 2018-11-19
Emergent Superconductivity In Low Dimensions written by Diane Ansermet and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-19 with Technology & Engineering categories.
This book explores the relationship between electronic correlations, dimensionality, inhomogeneities, and superconductivity in low-dimensional systems by studying single crystals of the quasi-one-dimensional Na2–δMo6Se6, composed of MoSe filaments weakly coupled by Na atoms and subject to intrinsic disorder (δ > 0). It shows that the Na2-δMo6Se6 displays strong electronic correlations in its normal state, whereas a superconducting ground state emerges from Anderson localized electrons. Two novel behaviors of the superconducting state are observed: first, a disorder induced enhancement of the superconducting transition temperature; second, a reentrant phase coherence with increasing temperature, magnetic field, and current. It also analyzes the intrinsic properties of Na2-δMo6Se6 are analyzed to offer a thorough understanding of these phenomena. The emergence of superconductivity in such low-dimensional systems provides a fruitful playground to explore electronic order and correlations.
Emerging Low Dimensional Materials
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Author : Bo Chen
language : en
Publisher:
Release Date : 2023
Emerging Low Dimensional Materials written by Bo Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
In this Special Issue, we have a great collection of 11 outstanding articles that have been published. This Special Issue presents the recent progress on emerging low-dimensional materials and could encourage their future investigations. We hope that both researchers and the community in general can benefit from the outcomes of this Special Issue reprint.
Superinsulators Bose Metals And High Tc Superconductors The Quantum Physics Of Emergent Magnetic Monopoles
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Author : Carlo A Trugenberger
language : en
Publisher: World Scientific
Release Date : 2022-04-19
Superinsulators Bose Metals And High Tc Superconductors The Quantum Physics Of Emergent Magnetic Monopoles written by Carlo A Trugenberger and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-19 with Science categories.
In 1931 Dirac showed that topologically quantized single magnetic charges, magnetic monopoles, while classically forbidden in a gauge theory, are allowed alongside electric charges in a quantum theory of electromagnetism. Such topological magnetic excitations are indeed admitted in the spectrum of most grand unified field theories of elementary interactions. Despite 40 years of dedicated search efforts, nonetheless, they have never shown up in any experiment. This, however, does not preclude the possibility of topological magnetic monopoles being realized as excitations in emergent condensed matter states, where they would be much lighter and easier to create.This book is about the physical effects of such emergent magnetic monopoles. These range from a new mechanism for local, strong pairing of electrons possibly relevant for high-T superconductivity, to the formation of a new quantum phase of matter when monopoles condense. In such a condensate the electric interaction becomes extremely strong, so much so that only extended neutral states survive, with the consequence of an infinite resistance, even at finite temperatures. This state, called a superinsulator, is a dual superconductor and has been experimentally detected in various materials. In a superinsulator the electric interaction becomes analogous to the strong interaction holding quarks together in colour-neutral hadrons. Even more interesting is the case when the condensate carries both magnetic and electric charge. The ensuing state has properties that are strikingly reminiscent of the mysterious pseudogap state of high-T superconductors. Magnetic monopoles might thus have been hiding in plain sight where no one was looking for them for a long time.
Low Dimensional Cooperative Phenomena
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Author : H. Keller
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-11-29
Low Dimensional Cooperative Phenomena written by H. Keller and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-11-29 with Technology & Engineering categories.
Theoretical and experimental work on solids with low-dimensi onal cooperative phenomena has been rather explosively expanded in the last few years, and it seems to be quite fashionable to con tribute to this field, especially to the problem of one-dimensional metals. On the whole, one could divide the huge amount of recent investigations into two parts although there is much overlap bet ween these regimes, namely investigations on magnetic exchange interactions constrained to mainly one or two dimensions and, secondly, work done on Id metallic solids or linear chain compounds with Id delocalized electrons. There is, of course, overlap from one extreme case to the other with these solids and in some rare cases both phenomena are studied on one and the same crystal. In fact, however, most of the scientific groups in this area could be associated roughly with one of these categories and,in addition, a separation between theoreticians and experimentalists in each of these groups leads to a further splitting of interests although many theories about these solids have been tested by experimenta lists. Nevertheless, more cooperation and understanding between scientists working on low-dimensional cooperative phenomena should appreciably stimulate further development. With a better inderdis ciplinary understanding, new ideas could possibly help chemists in synthesizing tailor-cut solids. This would in return give experi mentalists new phenomena to examine and finally would stimulate new theoretical work.
Investigation Of Superconducting Order Parameters In Heavy Fermion And Low Dimensional Metallic Systems Under Pressure
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Author : Corneliu Florin Miclea
language : en
Publisher: Cuvillier Verlag
Release Date : 2008-08-26
Investigation Of Superconducting Order Parameters In Heavy Fermion And Low Dimensional Metallic Systems Under Pressure written by Corneliu Florin Miclea and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-08-26 with Science categories.
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.
Superconductivity In Low Dimensional Systems
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Author : Yeshayahu Atzmon
language : en
Publisher:
Release Date : 2012
Superconductivity In Low Dimensional Systems written by Yeshayahu Atzmon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Superconductivity categories.
Emerging Carbyne
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Author : Yahachi Saito
language : en
Publisher: CRC Press
Release Date : 2024-10-11
Emerging Carbyne written by Yahachi Saito and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-10-11 with Science categories.
Molecular carbon chains have attracted much interest for more than 130 years, but the length of chains is limited to 44 atoms even by sophisticated chemical synthesis. Recently, the artificial synthesis of long linear carbon chains, “carbynes,” has revived, and their existence was firmly substantiated using the latest advanced analytical methods, such as high-resolution electron microscopy and Raman scattering spectroscopy. Until the 1980s, graphite and diamond were the well-known allotropic forms of elemental carbon, which were two-dimensional (2D) and 3D crystals, respectively. Carbyne is the ultimate 1D nanowire with atomic diameter and its synthesis has opened prospects for versatile properties of carbon materials. Carbyne is a 1D semiconductor with a direct transition energy gap and interesting properties such as extreme mechanical strength are expected from it. This book comprehensively reviews and describes the latest chemical and physical synthesis methods, theoretically predicted properties, and possible applications of carbyne.
Investigation Of Superconducting Order Parameters In Heavy Fermion And Low Dimensional Metallic Systems Under Pressure
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Author :
language : en
Publisher:
Release Date : 2006
Investigation Of Superconducting Order Parameters In Heavy Fermion And Low Dimensional Metallic Systems Under Pressure written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
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. After this introduction, in Chapter 1 we will outline the basic theoretical concepts later needed for the analysis of the experimental results. In Chapter 2 we briefly introduce the experimental techniques with a special focus on the new pressure cells developed during this thesis 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 results obtained by resistivity measurements under.
Low Dimensional Cooperative Phenomena
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Author : H. J. Keller
language : en
Publisher:
Release Date : 2014-09-01
Low Dimensional Cooperative Phenomena written by H. J. Keller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-01 with categories.
Handbook Of Research On Emerging Developments And Environmental Impacts Of Ecological Chemistry
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Author : Duca, Gheorghe
language : en
Publisher: IGI Global
Release Date : 2019-12-06
Handbook Of Research On Emerging Developments And Environmental Impacts Of Ecological Chemistry written by Duca, Gheorghe and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-12-06 with Technology & Engineering categories.
Pollution has been a developing problem for quite some time in the modern world, and it is no secret how these chemicals negatively affect the environment. With these contaminants penetrating the earth’s water supply, affecting weather patterns, and threatening human health, it is critical to study the interaction between commercially produced chemicals and the overall ecosystem. Understanding the nature of these pollutants, the extent in which they are harmful to humans, and quantifying the total risks are a necessity in protecting the future of our world. The Handbook of Research on Emerging Developments and Environmental Impacts of Ecological Chemistry is an essential reference source that discusses the process of chemical contributions and their behavior within the environment. Featuring research on topics such as organic pollution, biochemical technology, and food quality assurance, this book is ideally designed for environmental professionals, researchers, scientists, graduate students, academicians, and policymakers seeking coverage on the main concerns, approaches, and solutions of ecological chemistry in the environment.