New Developments In Superconductivity Research

Author : Barry P. Martins
Publisher : Nova Publishers
Page : 334 pages
File Size : 52,7 Mb
Release : 2006
Category : Technology & Engineering
ISBN : 1594549850

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New Topics in Superconductivity Research by Barry P. Martins Pdf

Superconductivity is the ability of certain materials to conduct electrical current with no resistance and extremely low losses. High temperature superconductors, such as La2-xSrxCuOx (Tc=40K) and YBa2Cu3O7-x (Tc=90K), were discovered in 1987 and have been actively studied since. In spite of an intense, world-wide, research effort during this time, a complete understanding of the copper oxide (cuprate) materials is still lacking. Many fundamental questions are unanswered, particularly the mechanism by which high-Tc superconductivity occurs. More broadly, the cuprates are in a class of solids with strong electron-electron interactions. An understanding of such "strongly correlated" solids is perhaps the major unsolved problem of condensed matter physics with over ten thousand researchers working on this topic. High-Tc superconductors also have significant potential for applications in technologies ranging from electric power generation and transmission to digital electronics. This ability to carry large amounts of current can be applied to electric power devices such as motors and generators, and to electricity transmission in power lines. For example, superconductors can carry as much as 100 times the amount of electricity of ordinary copper or aluminium wires of the same size. Many universities, research institutes and companies are working to develop high-Tc superconductivity applications and considerable progress has been made. This volume brings together new leading-edge research in the field.

Author : Ross W. Stevens
Publisher : Nova Biomedical Books
Page : 254 pages
File Size : 44,5 Mb
Release : 2003
Category : Science
ISBN : UOM:39015058239131

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New Developments in Superconductivity Research by Ross W. Stevens Pdf

High-Tc superconductors have significant potential for applications in technologies ranging from electric power generation and transmission to digital electronics. This ability to carry large amounts of current can be applied to electric power devices such as motors and generators, and to electricity transmission in power lines. For example, superconductors can carry as much as 100 times the amount of electricity of ordinary copper or aluminium wires of the same size. Many universities, research institutes and companies are working to develop high-Tc superconductivity applications and considerable progress has been made. This book presents leading research from around the world in this exciting field.

Author : Barry P. Martins
Publisher : Nova Publishers
Page : 366 pages
File Size : 44,7 Mb
Release : 2007
Category : Technology & Engineering
ISBN : 1600214622

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Recent Developments in Superconductivity Research by Barry P. Martins Pdf

Superconductivity is the ability of certain materials to conduct electrical current with no resistance and extremely low losses. High temperature superconductors, such as La2-xSrxCuOx (Tc=40K) and YBa2Cu3O7-x (Tc=90K), were discovered in 1987 and have been actively studied since. In spite of an intense, world-wide, research effort during this time, a complete understanding of the copper oxide (cuprate) materials is still lacking. Many fundamental questions are unanswered, particularly the mechanism by which high-Tc superconductivity occurs. More broadly, the cuprates are in a class of solids with strong electron-electron interactions. An understanding of such "strongly correlated" solids is perhaps the major unsolved problem of condensed matter physics with over ten thousand researchers working on this topic. High-Tc superconductors also have significant potential for applications in technologies ranging from electric power generation and transmission to digital electronics. This ability to carry large amounts of current can be applied to electric power devices such as motors and generators, and to electricity transmission in power lines. For example, superconductors can carry as much as 100 times the amount of electricity of ordinary copper or aluminium wires of the same size. Many universities, research institutes and companies are working to develop high-Tc superconductivity applications and considerable progress has been made. This volume brings together new leading-edge research in the field.

Author : James R. Tobin
Publisher : Nova Publishers
Page : 268 pages
File Size : 44,6 Mb
Release : 2008
Category : Technology & Engineering
ISBN : 1600218482

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Superconductivity Research Developments by James R. Tobin Pdf

Superconductivity is a phenomenon occurring in certain materials at extremely low temperatures, characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect). The electrical resistivity of a metallic conductor decreases gradually as the temperature is lowered. However, in ordinary conductors such as copper and silver, impurities and other defects impose a lower limit. Even near absolute zero a real sample of copper shows a non-zero resistance. The resistance of a superconductor, on the other hand, drops abruptly to zero when the material is cooled below its "critical temperature", typically 20 kelvin or less. An electrical current flowing in a loop of superconducting wire can persist indefinitely with no power source. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It cannot be understood simply as the idealisation of "perfect conductivity" in classical physics. Superconductivity occurs in a wide variety of materials, including simple elements like tin and aluminium, various metallic alloys and some heavily-doped semiconductors. Superconductivity does not occur in noble metals like gold and silver, nor in most ferromagnetic metals. In 1986 the discovery of a family of cuprate-perovskite ceramic materials known as high-temperature superconductors, with critical temperatures in excess of 90 kelvin, spurred renewed interest and research in superconductivity for several reasons. As a topic of pure research, these materials represented a new phenomenon not explained by the current theory. And, because the superconducting state persists up to more manageable temperatures, more commercial applications are feasible, especially if materials with even higher critical temperatures could be discovered. This new book presents leading research from around the world in this dynamic field.

Author : Christopher B. Taylor
Publisher : Nova Science Publishers
Page : 0 pages
File Size : 45,9 Mb
Release : 2013
Category : Superconductivity
ISBN : 1626184062

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Recent Advances in Superconductivity Research by Christopher B. Taylor Pdf

The authors of this book present current research in the study of superconductivity. Topics discussed in this compilation include the effects of non-magnetic defects in hole doped cuprates; deep cryogenic refrigeration by photons based on the phonon deficit effect in superconductors; superconductivity driven by an anti-polar electric phase in high temperature superconducting materials; superconductive graphite intercalation compounds; a superconducting magnetic field concentrator with nanodimensional branches and slits; magnetic mechanisms of pairing in a strongly correlated electron system of copper oxides; two non-linear mechanisms of correlations between copper carriers in superconductivity and their microscopical descriptions; three dimensionality of the critical state and variational methods for magnetically anisotropic superconductors; theory of multi-band superconductivity; conserving approximation for the self-energy of the t-U-V-J model beyond the Hartree-Fock approximation; and superconductivity as a consequence of an ordering of zero-point oscillations in electron gas.

Author : Carl S. Winslow
Publisher : Nova Publishers
Page : 244 pages
File Size : 51,6 Mb
Release : 2007
Category : Science
ISBN : 1600211836

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New Topics in Josephson Junction and Superconductivity Research by Carl S. Winslow Pdf

The Josephson Junction is a type of electronic circuit capable of switching at very high speeds when operated at temperatures approaching absolute zero. It exploits the phenomenon of superconductivity, the ability of certain materials to conduct electric current with practically zero resistance. This book presents new and important research in superconductivity. This includes optical properties, magneto-optics and surface acoustic waves, microwave responses, theories of superconductivity, synthesis in electronic applications and high temperature superconductivity.

Author : Tetsuo Watanabe
Publisher : Nova Publishers
Page : 242 pages
File Size : 44,9 Mb
Release : 2008
Category : Technology & Engineering
ISBN : 1604560177

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Leading-edge Superconductivity Research Developments by Tetsuo Watanabe Pdf

This new book focuses on superconductivity which is the ability of certain materials to conduct electrical current with no resistance and extremely low losses. High temperature superconductors, such as La2-xSrxCuOx (Tc=40K) and YBa2Cu3O7-x (Tc=90K), were discovered in 1987 and have been actively studied since. In spite of an intense, worldwide, research effort during this time, a complete understanding of the copper oxide (cuprate) materials is still lacking.Many fundamental questions are unanswered, particularly the mechanism by which high-Tc superconductivity occurs. More broadly, the cuprates are in a class of solids with strong electron-electron interactions. An understanding of such 'strongly correlated' solids is perhaps the major unsolved problem of condensed matter physics with over ten thousand researchers working on this topic. High-Tc superconductors also have significant potential for applications in technologies ranging from electric power generation and transmission to digital electronics.

Author : Kaoru Yamafuji,Tadataka Morishita
Publisher : Springer Science & Business Media
Page : 1339 pages
File Size : 45,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9784431685357

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Advances in Superconductivity VII by Kaoru Yamafuji,Tadataka Morishita Pdf

The field of high-temperature superconductivity has encouraged an inter disciplinary approach to research. It has required significant cooperation and collaboration among researchers, each of whom has brought to it a rich variety of experience from many other fields. Recently, great improvements have been made in the quality of research. The subject has matured and been launched into the next stage through the resonance between science and technology. The current progress of materials processing and engineering in this field is analogous to that previously seen in the development of semiconductors. These include the appearance of materials taking the place of YBa2Cu307 owing to their improved properties (higher critical temperatures and stronger flux pin ning) in which rare earth ions with large radii (La, Nd, Sm) substitute for Y; the development of technology enabling growth control on the nanometer scale; and precise and reproducible measurements that can be used as rigorous tests of theoretical models, which in turn are expected to lead to the develop ment of new devices. For further progress in high-T research, academics and c technologists must pool their knowledge and experience. I hope that this volume will promote that goal by providing the reader with the latest results of high-temperature superconductor research and will stimulate further discussion and collaboration.

Author : J. Ashkenazi,Mikhail V. Eremin,Joshua L. Cohn,Ilya Eremin,Dirk Manske,Davor Pavuna,Fuliln Zuo
Publisher : Springer Science & Business Media
Page : 266 pages
File Size : 46,5 Mb
Release : 2006-01-24
Category : Science
ISBN : 9781402030857

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New Challenges in Superconductivity: Experimental Advances and Emerging Theories by J. Ashkenazi,Mikhail V. Eremin,Joshua L. Cohn,Ilya Eremin,Dirk Manske,Davor Pavuna,Fuliln Zuo Pdf

This volume contains the proceedings of the 2004 University of Miami Workshop on Unconventional Superconductivity. The workshop was the fourth in a series of successful meetings on High-T Superconductivity and C related topics, which took place at the James L. Knight Physics Building on the University of Miami campus in Coral Gables, Florida, in January 1991, 1995, 1999, and 2004. The workshop consisted of two consecutive events: 1. NATO Advanced Research Workshop (ARW) on New Challenges in Superconductivity: Experimental Advances and Emerging Theories, held on January 11-14, 2004; 2. Symposium on Emerging Mechanisms for High Temperature Superconductivity (SEMHTS), held on January 15-16, 2004. It is hard to write a balanced preface to a volume like this one, yet at least we try to offer the reader a taste of what was happening in this workshop. There were close to a hundred scientists from around the world, albeit fewer Russians than we had originally hoped for. Nevertheless, the workshop was very lively and we trust that this is demonstrated in this volume. The workshop included high-quality presentations on state of the art works, yet a key issue, discussed by many, was how homogeneous the cuprates are. STM data, as well as other reports, showed that the cuprate superconductors (SC’s) studied were inhomogeneous, especially in the underdoped regime; while experiments, like ARPES and magnetoresistance have established the existence of a Fermi Surface (FS), at least above some doping level, in the cuprates.

Author : Barry P. Martins
Publisher : Nova Publishers
Page : 236 pages
File Size : 40,6 Mb
Release : 2006
Category : Technology & Engineering
ISBN : 1594548501

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New Frontiers in Superconductivity Research by Barry P. Martins Pdf

Superconductivity is the ability of certain materials to conduct electrical current with no resistance and extremely low losses. High temperature superconductors, such as La2-xSrxCuOx (Tc=40K) and YBa2Cu3O7-x (Tc=90K), were discovered in 1987 and have been actively studied since. In spite of an intense, world-wide, research effort during this time, a complete understanding of the copper oxide (cuprate) materials is still lacking. Many fundamental questions are unanswered, particularly the mechanism by which high-Tc superconductivity occurs. More broadly, the cuprates are in a class of solids with strong electron-electron interactions. An understanding of such "strongly correlated" solids is perhaps the major unsolved problem of condensed matter physics with over ten thousand researchers working on this topic.

Author : United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Energy Research and Development
Publisher : Unknown
Page : 176 pages
File Size : 52,6 Mb
Release : 1988
Category : High temperature superconductivity
ISBN : LOC:00006272915

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High-temperature Superconductivity Technology Transfer by United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Energy Research and Development Pdf

Author : United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Energy Research and Development
Publisher : Unknown
Page : 280 pages
File Size : 50,5 Mb
Release : 1988
Category : Superconductivity
ISBN : PSU:000013680367

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Superconductivity by United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Energy Research and Development Pdf

Author : J. Ashkenazi,Mikhail V. Eremin,Joshua L. Cohn,Ilya Eremin,Dirk Manske,Davor Pavuna,Fuliln Zuo
Publisher : Springer Science & Business Media
Page : 296 pages
File Size : 41,8 Mb
Release : 2005-11-02
Category : Science
ISBN : 1402030835

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New Challenges in Superconductivity: Experimental Advances and Emerging Theories by J. Ashkenazi,Mikhail V. Eremin,Joshua L. Cohn,Ilya Eremin,Dirk Manske,Davor Pavuna,Fuliln Zuo Pdf

This volume contains the proceedings of the 2004 University of Miami Workshop on Unconventional Superconductivity. The workshop was the fourth in a series of successful meetings on High-T Superconductivity and C related topics, which took place at the James L. Knight Physics Building on the University of Miami campus in Coral Gables, Florida, in January 1991, 1995, 1999, and 2004. The workshop consisted of two consecutive events: 1. NATO Advanced Research Workshop (ARW) on New Challenges in Superconductivity: Experimental Advances and Emerging Theories, held on January 11-14, 2004; 2. Symposium on Emerging Mechanisms for High Temperature Superconductivity (SEMHTS), held on January 15-16, 2004. It is hard to write a balanced preface to a volume like this one, yet at least we try to offer the reader a taste of what was happening in this workshop. There were close to a hundred scientists from around the world, albeit fewer Russians than we had originally hoped for. Nevertheless, the workshop was very lively and we trust that this is demonstrated in this volume. The workshop included high-quality presentations on state of the art works, yet a key issue, discussed by many, was how homogeneous the cuprates are. STM data, as well as other reports, showed that the cuprate superconductors (SC’s) studied were inhomogeneous, especially in the underdoped regime; while experiments, like ARPES and magnetoresistance have established the existence of a Fermi Surface (FS), at least above some doping level, in the cuprates.

Author : Helga Nowotny,Ulrike Felt
Publisher : Cambridge University Press
Page : 226 pages
File Size : 47,9 Mb
Release : 2002-08-22
Category : Science
ISBN : 0521524792

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After the Breakthrough by Helga Nowotny,Ulrike Felt Pdf

Short book on the history and sociology of science surrounding the discovery of high-temperature superconductivity.

Author : Heshmatollah Yavari
Publisher : BoD – Books on Demand
Page : 110 pages
File Size : 44,9 Mb
Release : 2020-07-29
Category : Science
ISBN : 9781789840650

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On the Properties of Novel Superconductors by Heshmatollah Yavari Pdf

Since the discovery of superconductivity, a great number of theoretical and experimental efforts have been made to describe this new phase of matter that emerged in many body systems. In this regard, theoretical models have been presented; the most famous of which was the BCS theory that can only describe conventional superconductors. With the discovery of new class superconductors, the superconducting mechanism became a new challenge in the field of condensed matter physics. This unexpected discovery opened a new area in the history of superconductivity, and experimental researchers started trying to find new compounds in this class of superconductors. These superconductors are often characterized by the anisotropic character in the superconducting gap function with nodes along a certain direction in the momentum space. Since the pairing interaction has an important role in the superconducting gap structure, its determination is very important to explain the basic pairing mechanism.In this regard, this book includes valuable theoretical and experimental discussions about the properties of superconductors. Here you will find valuable research describing the properties of unconventional superconductors.