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Author: Satoru Ichinokura Publisher: Springer ISBN: 9811068534 Category : Science Languages : en Pages : 135
Book Description
This thesis presents first observations of superconductivity in one- or two-atomic-scale thin layer materials. The thesis begins with a historical overview of superconductivity and the electronic structure of two-dimensional materials, and mentions that these key ingredients lead to the possibility of the two-dimensional superconductor with high phase-transition temperature and critical magnetic field. Thereafter, the thesis moves its focus onto the implemented experiments, in which mainly two different materials thallium-deposited silicon surfaces and metal-intercalated bilayer graphenes, are used. The study of the first material is the first experimental demonstration of both a gigantic Rashba effect and superconductivity in the materials supposed to be superconductors without spatial inversion symmetry. The study of the latter material is relevant to superconductivity in a bilayer graphene, which was a big experimental challenge for a decade, and has been first achieved by the author. The description of the generic and innovative measurement technique, highly effective in probing electric resistivity of ultra-thin materials unstable in an ambient environment, makes this thesis a valuable source for researchers not only in surface physics but also in nano-materials science and other condensed-matter physics.
Author: Satoru Ichinokura Publisher: Springer ISBN: 9811068534 Category : Science Languages : en Pages : 135
Book Description
This thesis presents first observations of superconductivity in one- or two-atomic-scale thin layer materials. The thesis begins with a historical overview of superconductivity and the electronic structure of two-dimensional materials, and mentions that these key ingredients lead to the possibility of the two-dimensional superconductor with high phase-transition temperature and critical magnetic field. Thereafter, the thesis moves its focus onto the implemented experiments, in which mainly two different materials thallium-deposited silicon surfaces and metal-intercalated bilayer graphenes, are used. The study of the first material is the first experimental demonstration of both a gigantic Rashba effect and superconductivity in the materials supposed to be superconductors without spatial inversion symmetry. The study of the latter material is relevant to superconductivity in a bilayer graphene, which was a big experimental challenge for a decade, and has been first achieved by the author. The description of the generic and innovative measurement technique, highly effective in probing electric resistivity of ultra-thin materials unstable in an ambient environment, makes this thesis a valuable source for researchers not only in surface physics but also in nano-materials science and other condensed-matter physics.
Author: Koji Kajimura Publisher: Springer Science & Business Media ISBN: 4431681418 Category : Technology & Engineering Languages : en Pages : 1312
Book Description
Since the discovery of high temperature superconductors, many new materials have been invented. In the last year, several new materials were also discovered, but their critical temperatures are still below lOOK. Precise physical and chemical work has made tremendous progress in the theoretical and experimental study of physical properties and carrier state characterizations. The de Haas van Alphen effect measurement showed the existence of a Fermi surface in YBCO. Flux dynamics is a well-known new problem in which flux creep and irreversibility line features are especially important for a fundamental understanding of the critical current and flux pinning. Flux pinning centers which are intentionally added using non-superconducting precipitates, neutrons, and protons, etc. increase critical currents to practical levels. The analysis of electric and magnetic properties are expected to reveal the pinning mechanism and also to further application development. As for wires and bulks, many melt-like sintering techniques have improved the material performance of critical current densities. A new seeding Quench-Melt Growth technique enlarged crystal size and increased the repulsion force. These melting processes, in conjunction with a mechanical strength improvement have been effectively introduced into wire fabrication in order to realize kilometer range wires and will put the oxide wires to practical use. Where thin film is con cerned, when many fabrication methods had been developed using the assistance effect of activated oxygen such as ozone and oxygen radicals, a high current 2 density of 106A/cm at 77K was reported.
Author: Toshizo Fujita Publisher: Springer Science & Business Media ISBN: 443168266X Category : Science Languages : en Pages : 1359
Book Description
More than seven years have passed since the dramatic breakthrough in the critical temperature for superconductors. During this period, a host of new materials have been discovered, and efforts have been stepped up in a variety of domains including device and systems applications, commercialization, and basic research on the properties of superconductive materials. Recent progress in areas such as bulk single crystal production, long-scale wire and tape produc tion, flywheel and bearing applications, and electronic device applications for thin films indicate that science and technology have been working hand in hand in this field, as has been the case in the research and development of semi conductors. This interdisciplinary "resonance" will be certain to lead to further outstanding advances in the years to come. It goes without saying that worldwide information exchange is the key to accelerating progress in superconductivity science and technology. As in previous years, the ISS '93 served as a venue where visions of future develop ments were shared in addition to presentations and extensive discussions on the most up-to-date research results. I hope that the Proceedings contained in this volume will be consulted not only as a summary of the current "state of the art" in high-Tc superconductivity but also as a stimulating source of ideas regarding future applications of superconductivity research.
Author: Lei Fu Publisher: John Wiley & Sons ISBN: 3527828796 Category : Technology & Engineering Languages : en Pages : 436
Book Description
An up-to-date exploration of the properties and most recent applications of liquid metals In Liquid Metal: Properties, Mechanisms, and Applications, a pair of distinguished researchers delivers a comprehensive exploration of liquid metals with a strong focus on their structure and physicochemical properties, preparation methods, and tuning strategies. The book also illustrates the applications of liquid metals in fields as varied as mediated synthesis, 3D printing, flexible electronics, biomedicine, energy storage, and energy conversion. The authors include coverage of reactive mediums for synthesizing and assembling nanomaterials and direct-writing electronics, and the book offers access to supplementary video materials to highlight the concepts discussed within. Recent advancements in the field of liquid metals are also discussed, as are new opportunities for research and development in this rapidly developing area. The book also includes: A thorough introduction to the fundamentals of liquid metal, including a history of its discovery, its structure and physical properties, and its preparation Comprehensive explorations of the external field tuning of liquid metal, including electrical, magnetic, and chemical tuning Practical discussions of liquid metal as a new reaction medium, including nanomaterial synthesis and alloy preparation In-depth examinations of constructing techniques of liquid metal-based architectures, including injection, imprinting, and mask-assisted depositing Perfect for materials scientists, electrochemists, and catalytic chemists, Liquid Metal: Properties, Mechanisms, and Applications also belongs in the libraries of inorganic chemists, electronics engineers, and biochemists.
Author: Yukitaka Murakami Publisher: World Scientific ISBN: 9813201401 Category : Science Languages : en Pages : 830
Book Description
This symposium focused on new superconductors, electronics, magnet technology, energy and new applications. Recent discoveries in HTc, with transition temperatures over 90 K, have spawned a search for practical new applications. These applications extend from current uses such as that of the medical MRI to future applications, represented by research on new high-temperature materials. They span from microcircuit applications to the proposed SMES and fusion reactor applications.
Author: A. V. Narlikar Publisher: Oxford University Press ISBN: 0191058041 Category : Science Languages : en Pages : 704
Book Description
This handbook is about a remarkable set of materials that are technically referred to as "mesoscopic superconductors", which for all practical purposes are tiny or small in their dimensions, ranging from a few micrometers down to a nanometer. At this level of smallness, the superconducting properties are dramatically changed, showing the dominance of quantum effects. Ground breaking research studies of small superconductors have emerged, and in a world obsessed with miniaturization of electronic device technology, small superconductors acquire even greater relevance and timeliness for the development of exciting novel quantum devices. The chapters, contributed by noted researchers and frontrunners in the field from 15 countries, are presented in three parts, namely progress in basic studies, materials specific research, and advances in nanodevices. The contents of the handbook should be of immediate interest to advanced level university students and researchers particularly in physics, materials science, nanoscience and engineering departments. Various reviews and overviews appearing in the book should answer the queries and curiosities of non-specialists interested in nanoscale superconductivity. At the start, the book carries an extended introduction for readers new to the field. The book should also appeal to scientists and engineers from electronic industries interested in knowing the current status of the theory, manufacture, and future of mesoscopic superconductors. In doing so, this volume offers the opportunity to engage with cutting edge research in one of the most exciting fields of physics today and tomorrow.
Author: Giacomo Messina Publisher: IOS Press ISBN: 9781586032623 Category : Medical Languages : en Pages : 302
Book Description
Annotation Optical spectroscopy represents one of the most powerful and useful investigation tools. Due to the broad range of applications in scientific and technological Research, its potential is very great. Among the large variety of its branches, a leading role is played by Raman spectroscopy that, allowing the non-destructive material characterisation, is the most-widely utilised diagnostic-tool in Research laboratories. An encounter opportunity for Researchers working in the Spectroscopy field is offered by the Conference organised by the National Group of Raman Spectroscopy and non-linear effects (GNSR). The GNSR Meeting represents an appointment, usually recurring every two years. Its main purpose is to act as a common forum for Spectroscopists, where the most recent and relevant Italian results and applications are presented. The GNSR Conference, hence, constitutes an opportunity for a stimulating exchange of ideas and experiences among the members of the lively Scientific Community involved, including a variety of Scientists, such as Physicists, Chemists, Engineers, Architects, Historians of Art, active in the field of Raman spectroscopy and non-linear effects. Offering the possibility of both divulging assessed results and exploring the feasibility of new projects, the GNSR Meeting promotes the advancement of Raman spectroscopy and related techniques not only in Research, but also in Industry and Education.
Author: E. Kaldis Publisher: Elsevier ISBN: 0444596674 Category : Technology & Engineering Languages : en Pages : 755
Book Description
The dynamic developments in high-temperature superconductivity over the last three years has augmented the importance of materials research not only for applications, but also for the understanding of underlying physical phenomena. The discovery of new superconductors has opened up new facets of High Tc research, and the perfection of already known materials has enabled reliable physical measurements to be carried out, providing a foundation for theoretical models. The papers in this volume present an overview of the recent developments in the field of High Tc-materials research. One of the highlights of this meeting was the plenary lecture by the Nobel laureate K. Alex Müller on the importance of the apical oxygen phenomena which are strongly connected with Tc changes.
Author: X G Qiu Publisher: Elsevier ISBN: 0857091034 Category : Technology & Engineering Languages : en Pages : 450
Book Description
High temperature superconductors have received a great deal of attention in recent years, due to their potential in device and power applications. This book summarises the materials science and physics of all the most important high temperature superconductors as well as discussing material growth, properties and applications.Part one covers fundamental characteristics of high temperature superconductors and high TC films such as deposition technologies, growth, transport properties and optical conductivity. Part two is concerned with growth techniques and properties of high temperature superconductors, including YBCO, BSCCO and HTSC high TC films, and electron-doped cuprates. Finally, part three describes the various applications of high temperature superconductors, from Josephson junctons and dc-superconductive quantum inference devices (dc-SQUIDs) to microwave filters.With its distinguished editor and international team of contributors, this book is an invaluable resource for those researching high temperature superconductors, in industry and academia. In light of the many recent advances in high temperature superconductors, it will benefit physicists, materials scientists and engineers working in this field, as well as in areas of industrial application, such as electronic devices and power transmission. - Summarises the materials science and physics of all the most important high temperature superconductors - Discusses material growth, properties and applications - Outlines fundamental characteristics of high temperature superconductors and high TC films
Author: Satoru Ichinokura
Author: Satoru Ichinokura
Author: Koji Kajimura
Author: Toshizo Fujita
Author: Lei Fu
Author: Yukitaka Murakami
Author: A. V. Narlikar
Author: Giacomo Messina
Author: E. Kaldis
Author: 
Author: X G Qiu