Download or read book Specific Heat of Some Unusual Superconductors written by Christopher Nelson King and published by . This book was released on 1972 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Specific Heat of Unconventional Superconductors written by Borko Djurkovic and published by . This book was released on 2010 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: PrOs4Sb12 is the first known heavy fermion superconductor containing Pr. Many experiments show results indicating unconventional superconductivity in this system. Most notably, PrOs4Sb12 exhibits two superconducting transitions. The upper transition occurs at Tc1 ≈ 1.89 K and the lower transition occurs at Tc2 ≈ 1.72 K. There are many features of this system that are not understood and do not have a unifi ed consensus among researchers. Many issues remain unanswered, such as the origin of superconductivity, symmetry of the superconducting energy gap, and the nature of the two superconducting transitions. We present specific heat data for a single PrOs4Sb12 crystal. The data show two superconducting transitions. Variance in the lower superconducting transition (among various samples) suggests multiple superconducting phases. Power law dependence of the low temperature specific heat is indicative of asymmetric energy gap. Cuprates are unconventional high temperature superconductors. The theory on origin and characteristics of superconductivity in these systems is still a debated issue. Experiments indicate presence of a phase in these systems that occurs above the superconducting transition temperature which exhibits some common characteristics with the superconducting state. An important issue is the nature of this so-called "pseudogap" phase and its relationship to the superconducting state. We have developed an experimental apparatus and procedure for measuring the specific heat of a high temperature superconductor and demonstrated it by measuring the heat capacity of a YBCO high-Tc superconductor sample.

Download or read book Superconductors written by A. V. Narlikar and published by Oxford University Press. This book was released on 2014-04-03 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconductors is neither about basic aspects of superconductivity nor about its applications, but its mainstay is superconducting materials. Unusual and unconventional features of a large variety of novel superconductors are presented and their technological potential as practical superconductors assessed. The book begins with an introduction to basic aspects of superconductivity. The presentation is readily accessible to readers from a diverse range of scientific and technical disciplines, such as metallurgy, materials science, materials engineering, electronic and device engineering, and chemistry. The derivation of mathematical formulas and equations has been kept to a minimum and, wherever necessary, short appendices with essential mathematics have been added at the end of the text. The book is not meant to serve as an encyclopaedia, describing each and every superconductor that exists, but focuses on important milestones in their exciting development.

Download or read book Superconducting Devices Materials written by and published by . This book was released on 1974 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superconductivity written by R.D. Parks and published by Routledge. This book was released on 2018-03-29 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1969. CRC Press is an imprint of Taylor & Francis.

Download or read book Handbook of Superconducting Materials written by David A. Cardwell and published by CRC Press. This book was released on 2003 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of High Temperature Superconductivity and the increasing reliability of fabrication techniques, superconductor technology has moved firmly into the mainstream of academic and industrial research. There is currently no single source of practical information giving guidance on which technique to use for any particular category of superconductor. An increasing number of materials scientists and electrical engineers require easy access to practical information, sensible advice and guidance on 'best-practice' and reliable, proven fabrication and characterisation techniques.The Handbook will be the definitive collection of material describing techniques for the fabrication and analysis of superconducting materials. In addition to the descriptions of techniques, authoritative discussions written by leading researchers will give guidance on the most appropriate technique for a particular situation.Characterisation and measurement techniques will form an important part of the Handbook, providing researchers with a standard reference for experimental techniques. The tutorial style description of these techniques makes the Handbook particularly suitable for use by graduate students.The Handbook will be supported by a comprehensive web site which will be updated with new data as it emerges.The Handbook has six main sections: -- Fundamentals of Superconductivity - characteristic properties, elementary theory, critical current of type II superconductors-- Processing - bulk materials, wires and tapes, thick and think films, contact techniques-- Characterisation Techniques - structure/microstructure, measurement and interpretation of electromagnetic properties,measurement of physics properties-- Materials - characteristic properties of low and high Tc materials-- Applications - high current applications, trapped flux devices, high frequency devices, josephson junction devic

Download or read book Low temperature Specific Heat of Several High Temperature Superconductors in the Superconducting and Mixed States written by Steven Elliot Stupp and published by . This book was released on 1992 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The low-temperature specific heat of high quality, well characterized sintered polycrystalline samples of superconducting Ba$sb{0.6}$K$sb{0.4}$BiO$sb3,$ YBa$sb2$Cu$sb3$O$sb{6.7},$ and Bi$sb2$Sr$sb2$CaCu$sb2$O$sb{rm 8+x}$ were measured in the superconducting state. Careful analysis of the data below 10K indicate that the contribution to the specific heat which has a linear dependence on temperature, which has been observed in samples of YBa$sb2$Cu$sb3$O$sb{7-delta},$ is not a universal feature of the high temperature superconductors. We observed that the linear term in YBa$sb2$Cu$sb3$O$sb{7-delta}$ is weakly dependent on the oxygen content, $delta.$ We argue that a linear term of 4 mJ/mole K$sp2$ is intrinsic to this compound, and while the origin of this linear term is still unknown it does not appear to be associated with the superconducting state. The low-temperature specific heat of the YBa$sb2$Cu$sb3$O$sb{6.7}$ and Bi$sb2$Sr$sb2$CaCu$sb2$O$sb{rm 8+x}$ samples were also measured in the mixed state in applied magnetic fields up to 3T. A strong field dependence in the specific heat was observed in the YBa$sb2$Cu$sb3$O$sb{6.7}$ sample, while the specific heat of Bi$sb2$Sr$sb2$CaCu$sb2$O$sb{rm 8+x}$ was independent of field. The presence of a large field dependence at low-temperatures in the mixed state is not in agreement with the predictions of London theory. We mention several possible explanations for the large field dependence of the specific heat, including novel vortex structures, vortex kink nucleation, vortex core interactions, proximity effect coupling, and nodes in the superconducting gap.

Download or read book Report of NRL Progress written by Naval Research Laboratory (U.S.) and published by . This book was released on 1974 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superconductors written by Randy Simon and published by Springer. This book was released on 2013-11-11 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Introduction to Unconventional Superconductivity written by V.P. Mineev and published by CRC Press. This book was released on 1999-09-21 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unconventional superconductivity (or superconductivity with a nontrivial Cooper pairing) is believed to exist in many heavy-fermion materials as well as in high temperature superconductors, and is a subject of great theoretical and experimental interest. The remarkable progress achieved in this field has not been reflected in published monographs and textbooks, and there is a gap between current research and the standard education of solid state physicists in the theory of superconductivity. This book is intended to meet this information need and includes the authors' original results.

Download or read book High Tc Superconductors and Related Transition Metal Oxides written by Annette Bussmann-Holder and published by Springer Science & Business Media. This book was released on 2007-03-29 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents theoretical as well as experimental articles focused on recent new results in high temperature superconductivity. All contributors are high ranking scientists who have done major work to enhance the understanding of this phenomenon. A few articles deal with ferroelectricity and its applications. The book is dedicated to Prof. Dr. K. Alex Müller on his 80th birthday. During his scientific career he made major advances in the understanding of ferroelectricity.

Download or read book Physical Properties of High Temperature Superconductors written by Rainer Wesche and published by John Wiley & Sons. This book was released on 2015-07-07 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: A much-needed update on complex high-temperature superconductors, focusing on materials aspects; this timely book coincides with a recent major break-through of the discovery of iron-based superconductors. It provides an overview of materials aspects of high-temperature superconductors, combining introductory aspects, description of new physics, material aspects, and a description of the material properties This title is suitable for researchers in materials science, physics and engineering. Also for technicians interested in the applications of superconductors, e.g. as biomagnets

Download or read book High Temperature Superconducting Materials written by William E. Hatfield and published by CRC Press. This book was released on 1988-04-07 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emphasizing a multidisciplinary approach reflecting distinguished contributions by chemists, physicists, materials scientists, ceramicists, and electrical engineers, this timely reference gives a unified, comprehensive treatment of superconductivity encompassing background information for beginners and pioneering research for the most advanced specialists. Complete with over 500 citations of related literature and numerous diagrams, tables, and photographs, High-Temperature Superconducting Materials includes a review of oxide superconductors' structure/property relationships and factors affecting the conduction mechanism ... chronology of developments leading to the discovery of high-temperature superconducting materials ... basic physics of superconductivity ... discussions of XANES, ac Josephson effect, thermogravimetry, EPR, electron microscopy, infrared reflectance, Raman spectroscopy, magnetic susceptibilities, and specific heat studies ... unusual features of materials with high T[subscript c]'s ... processing techniques' effects on the properties of resultant materials ... and the effects of structure and chemical composition on the superconductivity transition temperature. An authoritative appraisal of a rapidly advancing field, High-Temperature Superconducting Materials is an indispensable reference for solid-state chemists and physicists, materials scientists and engineers, ceramicists, and electrical and electronics engineers as well as advanced undergraduate and graduate students interested in superconductivity. Book jacket.

Download or read book High Tc Superconductors and Related Materials written by S.-L. Drechsler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: A broad introduction to high Tc superconductors, their parent compounds and related novel materials, covering both fundamental questions of modern solid state physics (such as correlation effects, fluctuations, unconventional symmetry of superconducting order parameter) and applied problems related to short coherence length, grain boundaries and thin films. The information that can be derived from electron spectroscopy and optical measurements is illustrated and explained in detail. Descriptions widely employ the clear, relatively simple, phenomenological Ginzburg-Landau model of complex phenomena, such as vortex physics, vortex charge determination, plasmons in superconductors, Cooper pair mass, and wetting of surfaces. The first comprehensive reviews of several novel classes of materials are presented, including borocarbides and chain cuprates.

Download or read book Physical Properties Of High Temperature Superconductors Ii written by Donald M Ginsberg and published by World Scientific. This book was released on 1990-02-01 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of Physical Properties of High Temperature Superconductors I, research in the field of high temperature superconductivity has continued at a rapid pace. Volume II will contain chapters on some of the major areas of activity which were not covered extensively in Volume I: structure, microstructure, thermodynamics, oxygen stoichiometry effects, nuclear magnetic and quadrupole resonance, Hall effect, electronic structure, and the pairing state. Like Volume I, it will present authoritative and comprehensive reviews written by recognized experts in the field. This book should be useful to all students, scientists, and engineers who desire to know more about high temperature superconductivity.

Download or read book High Temperature Superconductivity written by Jeffrey W. Lynn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most exciting developments in modern physics has been the discovery of the new class of oxide materials with high superconducting transition temperature. Systems with Tc well above liquid nitrogen temperature are already a reality and higher Tc's are anticipated. Indeed, the idea of a room-temperature superconductor, which just a short time ago was considered science fiction, appears to be a distinctly possible outcome of materials research. To address the need to train students and scientists for research in this exciting field, Jeffrey W. Lynn and colleagues at the University of Maryland, College Park, as well as other superconductivity experts from around the U.S., taught a graduate-level course in the fall of 1987, from which the chapters in this book were drawn. Subjects included are: Survey of superconductivity (J. Lynn).- The theory of type-II superconductivity (D. Belitz).- The Josephson effect (P. Ferrell).- Crystallography (A. Santoro).- Electronic structure (C.P. Wang).- Magnetic properties and interactions (J. Lynn).- Synthesis and diamagnetic properties (R. Shelton).- Electron pairing (P. Allen).- Superconducting devices (F. Bedard).- Superconducting properties (J. Crow, N.-P. Ong).

Download or read book Proceedings of the Yamada Conference XVIII on Superconductivity in Highly Correlated Fermion Systems written by M. Tachiki and published by Elsevier. This book was released on 2013-09-24 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconductivity in Highly Correlated Fermion Systems documents the proceedings of the Yamada Conference XVIII on Superconductivity in Highly Correlated Fermion Systems held in Sendai, Japan, from August 31 to September 3, 1987. This book compiles selected papers on the experimental and theoretical advances in the study of superconductivity. The topics include the superconductivity and magnetism in heavy-electron materials, magneto-resistance of heavy-fermion compounds, and magnetic fluctuations and order in exotic superconductors. The fabrication and properties of thin superconducting oxide films, bipolaron models of superconductors, superconducting properties of superlattices, and flux quantization on quasi-crystalline networks are also covered. This publication is recommended for physicists and students researching on the superconductivity in highly correlated fermion systems.