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Author: G. Costabile
Publisher: Springer Science & Business Media
ISBN: 1461538521
Category : Science
Languages : en
Pages : 439
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Book Description
The on-going developments, and the recent achievements of the superconducting electronics (especially in the field of Josephson junctions and the inherent nonlinear dynamics) inspired us to organize a conference where different groups working on the subject could meet and discuss the latest results of their investigations. This idea was realized as two joint workshops, the NATO Advanced Research Workshop on Superconducting Electronics with Prof. N.F. Pedersen as chairman, and the 2nd Workshop on Josephson Devices, with Profs. G. Costabile and M. Russo as chairmen, held in Capri, Italy on September 3-7, 1990. The Workshops were very successful. About 70 scientists from 12 countries (Denmark, France, Germany, Greece, Italy, Japan, People's Republic of China, Sweden, United Kingdom, USA, USSR, and Venezuela) enjoyed the many interesting and mostly informal occasions for scientific exchanges as well as the very pleasant weather of Southern Italy. We are very grateful to the Institutions which made possible the realization and the success of the conference with their financial support : NATO Science Committee through the NATO International Scientific Exchange Programmes, University of Salerno, and Istituto di Cibernetica of the Consiglio Nazionale delle Ricerche (C.N.R.) of Italy. The conference was held under the auspices of the Progetto Finalizzato "Superconductive and Cryogenic Technologies" of C.N.R. Finally special thanks go to our Conference Secretary Anna Maria Mazzarella for carrying out most of the organizative work, and for her continuous "on stage" support in solving all the problems which inevitably arise in such occasions.
Author: G. Costabile
Publisher: Springer Science & Business Media
ISBN: 1461538521
Category : Science
Languages : en
Pages : 439
Get Book Here
Book Description
The on-going developments, and the recent achievements of the superconducting electronics (especially in the field of Josephson junctions and the inherent nonlinear dynamics) inspired us to organize a conference where different groups working on the subject could meet and discuss the latest results of their investigations. This idea was realized as two joint workshops, the NATO Advanced Research Workshop on Superconducting Electronics with Prof. N.F. Pedersen as chairman, and the 2nd Workshop on Josephson Devices, with Profs. G. Costabile and M. Russo as chairmen, held in Capri, Italy on September 3-7, 1990. The Workshops were very successful. About 70 scientists from 12 countries (Denmark, France, Germany, Greece, Italy, Japan, People's Republic of China, Sweden, United Kingdom, USA, USSR, and Venezuela) enjoyed the many interesting and mostly informal occasions for scientific exchanges as well as the very pleasant weather of Southern Italy. We are very grateful to the Institutions which made possible the realization and the success of the conference with their financial support : NATO Science Committee through the NATO International Scientific Exchange Programmes, University of Salerno, and Istituto di Cibernetica of the Consiglio Nazionale delle Ricerche (C.N.R.) of Italy. The conference was held under the auspices of the Progetto Finalizzato "Superconductive and Cryogenic Technologies" of C.N.R. Finally special thanks go to our Conference Secretary Anna Maria Mazzarella for carrying out most of the organizative work, and for her continuous "on stage" support in solving all the problems which inevitably arise in such occasions.
Author: Harold Weinstock
Publisher: Springer Science & Business Media
ISBN: 3642838855
Category : Technology & Engineering
Languages : en
Pages : 451
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Book Description
The genesis of the NATO Advanced Study Institute (ASI) upon which this volume is based, occurred during the summer of 1986 when we came to the realization that there had been significant progress during the early 1980's in the field of superconducting electronics and in applications of this technology. Despite this progress, there was a perception among many engineers and scientists that, with the possible exception of a limited number of esoteric fundamental studies and applications (e.g., the Josephson voltage standard or the SQUID magnetometer), there was no significant future for electronic systems incorporating superconducting elements. One of the major reasons for this perception was the aversion to handling liquid helium or including a closed-cycle helium liquefier. In addition, many critics felt that IBM's cancellation of its superconducting computer project in 1983 was "proof" that superconductors could not possibly compete with semiconductors in high-speed signal processing. From our perspective, the need for liquid helium was outweighed by improved performance, i. e., higher speed, lower noise, greater sensitivity and much lower power dissipation. For many commercial, medical, scientific and military applications, these attributes can lead to either enhanced capability (e.g., compact real-time signal processing) or measurements that cannot be made using any other technology (e.g., SQUID magnetometry to detect neuromagnetic activity).
Author: P. L. Christiansen
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
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Book Description
The long and intermediate length Josephson tunnel junction oscillator with overlap geometry of linear and circular configuration, is investigated by computational solution of the perturbed sine-Gordon equation model and by experimental measurements. The model predicts the experimental results very well. Line oscillators as well as ring oscillators are treated. For long junctions soliton perturbation methods are developed and turn out to be efficient prediction tools, also providing physical understanding of the dynamics of the oscillator. For intermediate length junctions expansions in terms of linear cavity modes reduce computational costs. The narrow linewidth of the electromagnetic radiation (typically 1 kHz of a line at 10 GHz) is demonstrated experimentally. Corresponding computer simulations requiring a relative accuracy of less than 10 to the -7th power are performed on supercomputer CRAY-1-S. The broadening of linewidth due to external microradiation and internal thermal noise is determined. Keywords include: Cavity mode; Chaos; Fiske steps; Hysteresis; Intermittency, Josephson fluxon oscillator; Josephson ring oscillator; Josephson tunnel junction; Noise rise; Perturbation theory; Radiation line-width; Sine-Gordon equation (perturbed); Solition (fluxon); SQUID; Subharmonics; and Zero field stages.
Author: Harold Weinstock
Publisher: Springer Science & Business Media
ISBN: 9780792325154
Category : Technology & Engineering
Languages : en
Pages : 486
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Book Description
This work provides a review of recent advances in all aspects of superconducting electronics, both for the traditional (4 K) liquid helium based (LTS) materials and the more recent ceramic (HTS) materials that can operate at higher temperatures in the range of liquid nitrogen (77 K).
Author: Alan M. Kadin
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 408
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Book Description
Superconductivity made accessible-a unique introduction. Does superconductivity have to be hard to understand? No, says Alan Kadin, as he proceeds to make the field accessible to engineers, applied physicists, even undergraduate students in electrical engineering. Setting advanced theories aside, Dr. Kadin uses simple circuit models to develop an understanding of the physics of superconductors, then applies this knowledge to superconducting circuits and systems. He covers cutting-edge circuit applications and materials along with practical examples-giving readers insight into the pros and cons of various superconductors and what superconductivity has to offer for different disciplines. End-of-chapter problems as well as numerous conceptual line drawings, circuit schematics, and plots complement the following topics: * The central role of inductance and kinetic inductance. * Transmission line model for RF and dc properties. * Dual circuit transformations to follow vortex and fluxon motion. * A balanced coverage of low-temperature and high-temperature superconductors. * Both large-scale (power) and small-scale (electronic) applications. * Applications of superconducting devices to electromagnetic radiation detectors. * The use of SPICE to simulate Josephson junctions and circuits. *An Instructor's Manual presenting detailed solutions to all the problems in the book is available from the Wiley editorial department.
Author: J.C Gallop
Publisher: CRC Press
ISBN: 9780750300513
Category : Technology & Engineering
Languages : en
Pages : 256
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Book Description
The science of superconducting electronics was first developed over forty years ago, fifty years after the discovery of superconductivity. Since then, a wide range of applications has emerged, and more are envisaged within this ever expanding and exciting field. SQUIDs, the Josephson Effects and Superconducting Electronics chronicles this development from fundamental principles to the present work with high-temperature superconductors. The book discusses superconductivity, Josephson effects, and detectors of unparalleled sensitivity such as SQUIDs. It punctuates theory with practical discussions on how to harness this new science. This complete guide to the subject is an invaluable resource for graduate students and researchers with a specific interest in this field. It also provides guidance to those working in areas of industry where superconducting electronics could be applied.
Author: Ko Hara
Publisher: IOS Press
ISBN: 9789051991277
Category : Technology & Engineering
Languages : en
Pages : 402
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Book Description
Since the discovery of the new copper oxide superconductor in 1987, research groups who were preparing superconductivity electronics got into it. The body of this book contain work of researches in this new field. Some of these research groups originates from the semiconductor research field and the competition and collaboration of them accelerated research activities fortunately.
Author: Edward L. Wolf
Publisher: CRC Press
ISBN: 1315340852
Category : Science
Languages : en
Pages : 470
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Book Description
This book summarizes the history and present status and applications of Josephson junctions. These devices are leading elements in superconducting electronics and provide state-of-the-art performance in detection of small magnetic fields and currents, in several digital computing methods, and in medical diagnostic devices and now provide voltage standards used worldwide. Astronomical infrared (IR) telescopes, including the South Pole Telescope, use these junctions in combinations called superconducting quantum interference devices (SQUIDs).
Author: Meckbach, Johannes Maximilian
Publisher: KIT Scientific Publishing
ISBN: 3731501228
Category : Science
Languages : en
Pages : 204
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Book Description
Within this book fabrication processes for high-quality Josephson junctions based on niobium and aluminum oxide as well as niobium nitride and aluminum nitride on various substrates are discussed. Techniques for achieving a planar chip topography and sub-μm lateral dimensions, aiding the realization of sophisticated Josephson devices such as SQUIDs, flux-flow oscillators and long Josephson junctions with artificial phase discontinuities, are presented in detail.
Author: Steven T. Ruggiero
Publisher: Elsevier
ISBN: 0323151647
Category : Technology & Engineering
Languages : en
Pages : 411
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Book Description
Superconducting Devices presents the theory, qualification, and fabrication of superconducting device elements and integrated circuitry. This book discusses the various uses of superconducting devices in many areas where their sensitivity, speed, or other characteristics stemming from the unique nature of superconductivity make them the device of choice. Organized into 10 chapters, this book begins with an overview of superconducting quantum interference devices (SQUIDs), which is the main achievement of superconductor electronics. This text then examines the status of dc and rf SQUIDs. Other chapters consider the progress in the fabrication technology for high-quality junctions and it integration technology, which are developed mainly for digital applications. This book discusses as well the increasing need for compact submillimeter sources for use in such applications as satellite communications and receivers for astronomical observation. The final chapter deals with the thin film tunneling experiments. This book is a valuable resource for physicists, chemists, materials scientists, and electrical engineers.
