Download or read book Electromagnetic Absorption in the Copper Oxide Superconductors written by Frank J. Owens and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1987 a major breakthrough occurred in materials science. A new family of materials was discovered that became superconducting above the temperature at which nitrogen gas liquifies, namely, 77 K or –196°C. Within months of the discovery, a wide variety of experimental techniques were brought to bear in order to measure the properties of these materials and to gain an understanding of why they superconduct at such high temperatures. Among the techniques used were electromagnetic absorption in both the normal and the superconducting states. The measurements enabled the determination of a wide variety of properties, and in some instances led to the observation of new effects not seen by other measu- ments, such as the existence of weak-link microwave absorption at low dc magnetic fields. The number of different properties and the degree of detail that can be obtained from magnetic field- and temperature-dependent studies of electromagnetic abso- tion are not widely appreciated. For example, these measurements can provide information on the band gap, critical fields, the H–T irreversibility line, the amount of trapped flux, and even information about the symmetry of the wave function of the Cooper pairs. It is possible to use low dc magnetic field-induced absorption of microwaves with derivative detection to verify the presence of superconductivity in a matter of minutes, and the measurements are often more straightforward than others. For example, they do not require the physical contact with the sample that is necessary when using four-probe resistivity to detect superconductivity.

Download or read book Electromagnetic Absorption in the Copper Oxide Superconductors written by Frank J. Owens and published by Springer. This book was released on 2013-03-22 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1987 a major breakthrough occurred in materials science. A new family of materials was discovered that became superconducting above the temperature at which nitrogen gas liquifies, namely, 77 K or –196°C. Within months of the discovery, a wide variety of experimental techniques were brought to bear in order to measure the properties of these materials and to gain an understanding of why they superconduct at such high temperatures. Among the techniques used were electromagnetic absorption in both the normal and the superconducting states. The measurements enabled the determination of a wide variety of properties, and in some instances led to the observation of new effects not seen by other measu- ments, such as the existence of weak-link microwave absorption at low dc magnetic fields. The number of different properties and the degree of detail that can be obtained from magnetic field- and temperature-dependent studies of electromagnetic abso- tion are not widely appreciated. For example, these measurements can provide information on the band gap, critical fields, the H–T irreversibility line, the amount of trapped flux, and even information about the symmetry of the wave function of the Cooper pairs. It is possible to use low dc magnetic field-induced absorption of microwaves with derivative detection to verify the presence of superconductivity in a matter of minutes, and the measurements are often more straightforward than others. For example, they do not require the physical contact with the sample that is necessary when using four-probe resistivity to detect superconductivity.

Download or read book Electromagnetic Absorption in the Copper Oxide Superconductors written by Frank J. Owens and published by . This book was released on 2014-01-15 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory of Copper Oxide Superconductors written by Hiroshi Kamimura and published by Springer Science & Business Media. This book was released on 2005-12-05 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an advanced textbook for graduate students and researchers wishing to learn about high temperature superconductivity in copper oxides, in particular the Kamimura-Suwa (K-S) model. Because a number of models have been proposed since the discovery of high temperature superconductivity by Bednorz and Müller in 1986, the book first explains briefly the historical development that led to the K-S model. It then focuses on the physical background necessary to understand the K-S model and on the basic principles behind various physical phenomena such as electronic structures, electrical, thermal and optical properties, and the mechanism of high temperature superconductivity.

Download or read book High Tc Copper Oxide Superconductors and Related Novel Materials written by Annette Bussmann-Holder and published by Springer. This book was released on 2017-03-24 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authored by many of the world's leading experts on high-Tc superconductivity, this volume presents a panorama of ongoing research in the field, as well as insights into related multifunctional materials. The contributions cover many different and complementary aspects of the physics and materials challenges, with an emphasis on superconducting materials that have emerged since the discovery of the cuprate superconductors, for example pnictides, MgB2, H2S and other hydrides. Special attention is also paid to interface superconductivity. In addition to superconductors, the volume also addresses materials related to polar and multifunctional ground states, another class of materials that owes its discovery to Prof. Müller's ground-breaking research on SrTiO3.

Download or read book Copper Oxide Superconductors written by Charles P. Poole, Jr. and published by Wiley-Interscience. This book was released on 1988-11-25 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study reviews the experimental aspects of oxide superconductivity, with transition temperatures from 30 K to above 100 K. It discusses experimental descriptions of principle superconducting compounds and covers VSC theory, electron-photon interaction and new theoretical models.

Download or read book A Study of the Nonresonant Microwave Absorption in Copper Oxide Superconductors written by Taha Mzoughi and published by . This book was released on 1990 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Understanding the Superconductivity in Copper Oxides written by Alex K. Muller and published by World Scientific Publishing Company. This book was released on 2020-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to clarify the situation by adopting a very different approach from the above electronic/magnetic models, where explicitly local dynamical distortions are considered. These are distinctly different from conventional phonons which are a property of the infinite translational invariant symmetric lattice. The local dynamical distortions are shown to account for bulk properties and provide consistent and quantitative agreement with experimental data together with explicit predictions. Selected published experimental and theoretical papers are presented which support the above arguments, but have been ignored on purpose by the originators of the RVB/t-J bubble. To summarize the scope of this book, comprising nine chapters, it is shown, that the phenomenon of HTS in copper oxides is much better understood than publically claimed by RVB/t-J followers. Using the words of B. Laughlin, the presence of the antiferromagnetism in HTS masks the underlying physics where vibronic bipolarons with spin S=0 are the major players. Furthermore is it worth mentioning, that the newly discovered Fe based layered compounds are rather closely related to the copper oxides which near degenerate bands due to the vibronic coupling of the copper-oxygen units with Jahn-Teller character. Analogous to the latter the Fe based superconductors exhibit almost degenerate wave vector independent bands near the Fermi energy stemming from the tetrahedrally coordinated Jahn-Teller active two-valent iron ion.

Download or read book Magnetic Mechanism of Superconductivity in Copper oxide written by Tanmoy Das and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date report on the recent advances in theory and experiment of the unconventional copper-oxide (known as cuprate) and iron-arsenic (called pnictide) superconductors. This book includes some experimental results which lead to the observation of spin-fluctuation spectrum in cuprates and pnictides.

Download or read book YBCO Superconductor Research Progress written by Li-Chun Liáng and published by Nova Publishers. This book was released on 2008 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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, 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. This Publication presents new research on yttrium barium copper oxide superconductors, often abbreviated YBCO, which is a chemical compound with the formula YBa2Cu3O7. This material, a famous 'high-temperature superconductor', achieved prominence because it was the first material to superconduct above the boiling point of nitrogen. All materials developed before YBCO became superconducting only at temperatures near the boiling points of liquid helium or liquid hydrogen (Tb = 20.1 K). The significance of the discovery of YBCO is the breakthrough in the refrigerant used to cool the material to below the critical temperature.

Download or read book Microwave Absorption in Oriented Polycrystalline Yttrium Barium Copper Oxide Superconductors written by Guo-mei Wu and published by . This book was released on 1990 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High temperature Superconductivity written by Nikolaĭ Maksimilianovich Plakida and published by . This book was released on 1995 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal and Magnetic Properties of Copper oxide Superconductors written by Andreas Schilling (Experimentalphysiker) and published by . This book was released on 1992 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal and Magnetic Properties of Copper oxide Superconductors written by Andreas Johannes Pius Schilling and published by . This book was released on 1992 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of High Temperature Superconductors written by A. V. Narlikar and published by . This book was released on 1992 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six papers by physicists from the Japan, India, Brazil and the US address some of the broad frontal issues of superconductivity, which include the mechanisms of high-temperature superconductivity, extra-high-temperature phenomena, the normal state pseudogap, the observations of the isotope effect in a host of different superconducting systems and their explanations, and the unusual features of strongly correlated electron systems like heavy fermions. Two extended papers explore the importance of positron annihilation and using electron spin resonance techniques to study superconducting materials. The treatments should be accessible to working scientists and engineers and to graduate students of physics, chemistry, materials science, solid-state electronics, and other disciplines.

Download or read book Crystal Chemistry of High Tc Superconducting Copper Oxides written by Bernard Raveau and published by . This book was released on 1991 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Physics and Chemistry of Oxide Superconductors written by Yasuhiro Iye and published by Springer. This book was released on 1992 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: