Download or read book High Tc Superconductors written by A. Bianconi and published by Elsevier. This book was released on 2016-10-27 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many theories at present which attempt to explain the property of high-temperature superconductivity in the new breed of superconducting ceramics - however, the electronic structure of these materials is not yet fully understood. The 29 papers in this work present the results from the use of a wide range of spectroscopic techniques, such as Raman, nuclear magnetic resonance and photoemission, in investigating the electronic structure of the new cuprate perovskites.
Download or read book Electronic Properties of High Tc Superconductors written by Hans Kuzmany and published by . This book was released on 1993-02-11 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of recent results reports transport-property measurements on high-Tc superconductors and investigations by means of microwave conductivity, optical spectroscopy, high-energy spectroscopy, and nuclear magnetic resonance. Further contributions consider problems related to structure, doping, the electron-phonon interaction, electron correlation, and mechanisms of high-Tc superconductivity. Reviews providing introductions for nonspecialists to particular areas are followed by research reports detailing our current understanding.
Download or read book The Gap Symmetry and Fluctuations in High Tc Superconductors written by Julien Bok and published by Springer Science & Business Media. This book was released on 2006-03-07 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery in 1986 of high temperature superconductors by J. G. Bednorz and K. A. Müller, a considerable progress has been made and several important scientific problems have emerged. Within this NATO Advanced Study Institute our intention was to focus mainly on the controversial topic of the symmetry of the superconducting gap and given the very short coherence length, the role of fluctuations. The Institute on ‘The Gap Symmetry and Fluctuations in High- Superconductors’ took place in the “Institut d’Etudes Scientifiques de Cargèse” in Corsica, France, between 1 - 13 September 1997. The 110 participantsfrom 18 countries (yet 30 nationalities) including 23 full time lecturers, have spent two memorable weeks in this charming Mediterranean resort. All lecturers were asked to prepare pedagogical papers to clearly present the central physical idea behind specific model or experiment. The better understanding of physics of high temperature superconductivity is certainly needed to guide the development of applications of these materials in high and weak current devices.
Download or read book Physics Of High Tc Superconductors written by J Phillips and published by Elsevier. This book was released on 2012-12-02 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics of High-Tc Superconductors highlights the important experiments that provide insights on the concept of high-temperature superconductors. Composed of 11 chapters, this book covers the theories and materials of these superconductors. The opening chapters of this book deal with the concepts at the cutting edge of materials science and the technical details of electron-phonon interaction calculations and their application to high-Tc superconductors. The subsequent chapters describe the various features of the atomic and electronic structure of high-Tc superconductor materials, such as quaternary, metallic, and pseudoperovskite copper oxides. These topics are followed by descriptions of the isotope effect, lattice vibrations, and optical spectra of high-Tc superconductor materials. The discussion then shifts to tunneling, relaxation, and morphological studies of these materials. The concluding chapter focuses on the superconductivity potential of bismates and thallates. Undergraduate materials science students will find this book invaluable.
Download or read book Spectroscopy of High Tc Superconductors written by N.M. Plakida and published by CRC Press. This book was released on 2003-03-20 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite ten years of intensive research, many questions remain unanswered concerning the nature of the electronic structure (Fermi vs non-Fermi liquid) and mechanisms of superconductivity. Spectroscopy of High-Tc Superconductors, A Theoretical View provides a current, comprehensive review of the experimental results and theoretical interpretations concerning elementary excitation spectra (electronic, phononic, charge, and spin fluctuations) in high-Tc superconductors (HTSC). It discusses accepted microscopic models that describe the electronic structure of the copper-oxide plane - the three-band model, the generalized Emery model, the one-band Hubbard model, different kinds of the t-J model, and the regular Kondo-lattice model - and compares them with ARPES experiments. Leading Russian researchers also consider experimental results obtained by Raman scattering both by phonons and electronic excitations, including magnetic excitations in antiferromagnets in the normal phase, on almost all the types of superconducting cuprates. The results are treated theoretically with the emphasis on features thought to be related to superconductivity. The book also gives an account of the properties of the microwave surface impedance and complex conductivity as functions of temperature common for high-quality single crystals: YBCO, BSCCO, TBCCO, and BKBO. The basics of the muon method and a review of experimental results for superconducting states of different HTSC-compounds are also presented. By offering a thorough examination of current research in the field, this book will appeal to advanced students and researchers working in superconductivity and theoretical condensed matter physics.
Download or read book High Tc Superconductors written by A. Bianconi and published by Pergamon. This book was released on 1989-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many theories at present which attempt to explain the property of high-temperature superconductivity in the new breed of superconducting ceramics - however, the electronic structure of these materials is not yet fully understood. The 29 papers in this work present the results from the use of a wide range of spectroscopic techniques, such as Raman, nuclear magnetic resonance and photoemission, in investigating the electronic structure of the new cuprate perovskites.
Download or read book High Temperature Superconductivity written by J. Ashkenazi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the University of Miami Workshop on the subject of "Electronic Structure and Mechanisms for High Temperature Super conductivity". The workshop was held at the James L. Knight Physics Building on the campus of the University of Miami, Coral Gables, 3-9 January 1991. Some 106 scientists from 12 countries attended this workshop, most of whom presented either invited or contributed papers. The reader will find in this volume a series of papers discussing the most im portant experimental and theoretical developments as of winter/spring 1990/1991. Despite more than four years of intensive research on high-T materials, there has c been considerable controversy both with respect to the interpretation of experiment and even more so in connection with the construction of an appropriate theory. In this regard, workshops such as this, gathering scientists with many viewpoints, and varying specialization, and fostering constructive discussions, are important in the de velopment of a common ground. Of major concern in the present context were the basic physical processes involved in high-temperature superconductivity.
Download or read book Characterization of High Tc Materials and Devices by Electron Microscopy written by Nigel D. Browning and published by Cambridge University Press. This book was released on 2000-07-06 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a clear account of the application of electron-based microscopies to the study of high-Tc superconductors. Written by leading experts, this compilation provides a comprehensive review of scanning electron microscopy, transmission electron microscopy and scanning transmission electron microscopy, together with details of each technique and its applications. Introductory chapters cover the basics of high-resolution transmission electron microscopy, including a chapter devoted to specimen preparation techniques, and microanalysis by scanning transmission electron microscopy. Ensuing chapters examine identification of superconducting compounds, imaging of superconducting properties by low-temperature scanning electron microscopy, imaging of vortices by electron holography and electronic structure determination by electron energy loss spectroscopy. The use of scanning tunnelling microscopy for exploring surface morphology, growth processes and the mapping of superconducting carrier distributions is discussed. Final chapters consider applications of electron microscopy to the analysis of grain boundaries, thin films and device structures. Detailed references are included.
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 Theoretical Study of Electron Correlation Driven Superconductivity in Systems with Coexisting Wide and Narrow Bands written by Daisuke Ogura and published by Springer Nature. This book was released on 2019-10-23 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the study of superconductivity in systems with coexisting wide and narrow bands. It has been previously suggested that superconductivity can be enhanced in systems with coexisting wide and narrow bands when the Fermi level is near the narrow band edge. In this book, the authors study two problems concerning this mechanism in order to: (a) provide a systematic understanding of the role of strong electron correlation effects, and (b) propose a realistic candidate material which meets the ideal criteria for high-Tc superconductivity. Regarding the role of strong correlation effects, the FLEX+DMFT method is adopted. Based on systematic calculations, the pairing mechanism is found to be indeed valid even when the strong correlation effect is considered within the formalism. In the second half of the book, the authors propose a feasible candidate material by introducing the concept of the “hidden ladder” electronic structure, arising from the combination of the bilayer lattice structure and the anisotropic orbitals of the electrons. As such, the book contributes a valuable theoretical guiding principle for seeking unknown high-Tc superconductors.
Download or read book High Temperature Superconductors written by Ajay Kumar Saxena and published by Springer Science & Business Media. This book was released on 2012-07-10 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the current knowledge about superconductivity in high Tc cuprate superconductors. There is a large scientific interest and great potential for technological applications. The book discusses all the aspects related to all families of cuprate superconductors discovered so far. Beginning with the phenomenon of superconductivity, the book covers: the structure of cuprate HTSCs, critical currents, flux pinning, synthesis of HTSCs, proximity effect and SQUIDs, possible applications of high Tc superconductors and theories of superconductivity. Though a high Tc theory is still awaited, this book describes the present scenario and BCS and RVB theories. The second edition was significantly extended by including film-substrate lattice matching and buffer layer considerations in thin film HTSCs, brick-wall microstructure in the epitaxial films, electronic structure of the CuO2 layer in cuprates, s-wave and d-wave coupling in HTSCs and possible scenarios of theories of high Tc superconductivity.
Download or read book High Tc Superconductors Based on FeAs Compounds written by Yuri Izyumov and published by Springer Science & Business Media. This book was released on 2010-11-11 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical properties and models of electronic structure are analyzed for a new class of high-TC superconductors which belong to iron-based layered compounds. Despite their variable chemical composition and differences in the crystal structure, these compounds possess similar physical characteristics, due to electron carriers in the FeAs layers and the interaction of these carriers with fluctuations of the magnetic order. A tremendous interest towards these materials is explained by the prospects of their practical use. In this monograph, a full picture of the formation of physical properties of these materials, in the context of existing theory models and electron structure studies, is given. The book is aimed at a broad circle of readers: physicists who study electronic properties of the FeAs compounds, chemists who synthesize them and specialists in the field of electronic structure calculations in solids. It is helpful not only to researchers active in the fields of superconductivity and magnetism, but also for graduate and postgraduate students and all those who would like to get acquaintained with this vivid area of the materials science.
Download or read book High TC Superconductors written by A. Bianconi and published by Pergamon. This book was released on 1989-09 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electron Electron Correlation Effects in Low Dimensional Conductors and Superconductors written by Alexandr A. Ovchinnikov and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in the physics and chemistry of low-dimensional systems have been really magnificent in the last few decades. Hundreds of quasi-one-dimensional and quasi-two-dimensional systems have been synthesized and studied. The most popular representatives of quasi-one-dimensional materials are polyacethylenes CH [1] and conducting donor-acceptor molecular crystals TIF z TCNQ. Examples of quasi-two-dimensional systems are high temperature su perconductors (HTSC) based on copper oxides LA2CU04, YBa2Cu306+y and organic superconductors based on BEDT -TIP molecules. The properties of such one- and two-dimensional materials are not yet fully understood. On the one hand, the equations of motion of one-dimensional sys tems are rather simple, which facilitates rigorous solutions of model problems. On the other hand, manifestations of various interactions in one-dimensional systems are rather peculiar. This refers, in particular, to electron--electron and electron-phonon interactions. Even within the limit of a weak coupling con stant electron--electron correlations produce an energy gap in the spectrum of one-dimensional metals implying a Mott transition from metal to semiconductor state. In all these cases perturbation theory is inapplicable. Which is one of the main difficulties on the way towards a comprehensive theory of quasi-one-dimensional systems. - This meeting held at the Institute for Theoretical Physics in Kiev May 15-18 1990 was devoted to related problems. The papers selected for this volume are grouped into three sections.
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 with total page 720 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 Tc Superconductivity written by Nie Luo and published by CRC Press. This book was released on 2021-02-25 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exciton mechanism of high-Tc superconductivity in copper oxides was initially proposed by Prof. J. Bardeen. His insight is largely shared by another luminary in superconductivity, Prof. V. L. Ginzburg. The main author of the book, Dr. Nie Luo, was motivated by their insights to give a geometrical explanation to the excitonic Coulomb interaction and has developed a unique formalism to understand and predict physical properties of high-Tc superconductors. This work is supported by increasingly strong evidence for electron–hole interactions in p-type cuprates. The presence of electrons in hole-doped cuprates is revealed by the works of the authors and many others, including the late Prof. L. P. Gor’kov. The book also tries to understand the interlayer Coulomb (ILC) pairing model by the excitonic Coulomb interaction. Developed by Prof. A. J. Leggett, ILC theory shares many views with Ginzburg’s approach. The other author of the book, Prof. George H. Miley, shares with us his personal experience with Prof. Bardeen on the exciton’s role in physics problems including high-Tc superconductivity. The results and predictions of this excitonic Coulomb mechanism have been verified by an increasing number of experiments. This book summarizes the current status and fathoms future directions.
Download or read book Electronic Properties of High Tc Superconductors written by Hans Kuzmany and published by Springer. This book was released on 1993-02-11 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International Winter School, Kirchberg, Tyrol, March 7-14, 1992