Non Universal Superconducting Gap Structure In Iron Pnictides Revealed By Magnetic Penetration Depth Measurements

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Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements

Author : Kenichiro Hashimoto
Publisher : Springer Science & Business Media
ISBN 13 : 4431542949
Total Pages : 135 pages
Book Rating : 4.4/5 (315 download)

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Book Synopsis Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements by : Kenichiro Hashimoto

Download or read book Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements written by Kenichiro Hashimoto and published by Springer Science & Business Media. This book was released on 2013-02-12 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book the author presents two important findings revealed by high-precision magnetic penetration depth measurements in iron-based superconductors which exhibit high-transition temperature superconductivity up to 55 K: one is the fact that the superconducting gap structure in iron-based superconductors depends on a detailed electronic structure of individual materials, and the other is the first strong evidence for the presence of a quantum critical point (QCP) beneath the superconducting dome of iron-based superconductors. The magnetic penetration depth is a powerful probe to elucidate the superconducting gap structure which is intimately related to the pairing mechanism of superconductivity. The author discusses the possible gap structure of individual iron-based superconductors by comparing the gap structure obtained from the penetration depth measurements with theoretical predictions, indicating that the non-universal superconducting gap structure in iron-pnictides can be interpreted in the framework of A1g symmetry. This result imposes a strong constraint on the pairing mechanism of iron-based superconductors. The author also shows clear evidence for the quantum criticality inside the superconducting dome from the absolute zero-temperature penetration depth measurements as a function of chemical composition. A sharp peak of the penetration depth at a certain composition demonstrates pronounced quantum fluctuations associated with the QCP, which separates two distinct superconducting phases. This gives the first convincing signature of a second-order quantum phase transition deep inside the superconducting dome, which may address a key question on the general phase diagram of unconventional superconductivity in the vicinity of a QCP.

Superconductors

Author : Alexander Gabovich
Publisher : BoD – Books on Demand
ISBN 13 : 9535107941
Total Pages : 455 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Superconductors by : Alexander Gabovich

Download or read book Superconductors written by Alexander Gabovich and published by BoD – Books on Demand. This book was released on 2012-10-17 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book includes 17 chapters written by noted scientists and young researchers and dealing with various aspects of superconductivity, both theoretical and experimental. The authors tried to demonstrate their original vision and give an insight into the examined problems. A balance between theory and experiment was preserved at least from the formal viewpoint (9 and 8, respectively). The readers should be warned that many of the problems studied here are far from being solved and are treated on the basis of competing viewpoints. The reason is that such is the state of the art! Science of superconductivity develops rapidly and new unexpected discoveries are expected in the nearest future.

Fundamentals of the Theory of Metals

Author : A. A. Abrikosov
Publisher : Courier Dover Publications
ISBN 13 : 0486819019
Total Pages : 641 pages
Book Rating : 4.4/5 (868 download)

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Book Synopsis Fundamentals of the Theory of Metals by : A. A. Abrikosov

Download or read book Fundamentals of the Theory of Metals written by A. A. Abrikosov and published by Courier Dover Publications. This book was released on 2017-10-18 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive primer by a Nobel Physicist covers the electronic spectra of metals, electrical and thermal conductivities, galvanomagnetic and thermoelectrical phenomena, the behavior of metals in high-frequency fields, sound absorption, and Fermi-liquid phenomena. Addressing in detail all aspects of the energy spectra of electrons in metals and the theory of superconductivity, it continues to be a valuable resource for the field almost thirty years after its initial publication. Targeted at undergraduate students majoring in physics as well as graduate and postgraduate students, research workers, and teachers, this is an essential reference on the topic of electromagnetism and superconductivity in metals. No special knowledge of metals beyond a course in general physics is needed, although the author does presume a knowledge of quantum mechanics and quantum statistics.

Quantum Critical Behavior in Deeply Underdoped Cuprate Films and Pairing Symmetry in Iron Pnictide Superconductors Probed by Penetration Depth Measurements

Download Quantum Critical Behavior in Deeply Underdoped Cuprate Films and Pairing Symmetry in Iron Pnictide Superconductors Probed by Penetration Depth Measurements PDF Online Free

Author : Jie Yong
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (87 download)

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Book Synopsis Quantum Critical Behavior in Deeply Underdoped Cuprate Films and Pairing Symmetry in Iron Pnictide Superconductors Probed by Penetration Depth Measurements by : Jie Yong

Download or read book Quantum Critical Behavior in Deeply Underdoped Cuprate Films and Pairing Symmetry in Iron Pnictide Superconductors Probed by Penetration Depth Measurements written by Jie Yong and published by . This book was released on 2012 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: (2) Iron-based Ba(CoxFe1-x)2As2 films near optimal doping: At low temperatures, superfluid density varies like [lambda]−2(T) [is proportional to] T2·55, consistent with a novel s± pairing symmetry with significant interband scattering between two different Fermi surfaces. Overall, [lambda]−2(T) can be fit by a dominant small BCS-like superconducting gap 2[delta]/kBTc ~2.1. The possible bigger gap vanishes and this may due to its strong intraband scattering.

Visualising the Charge and Cooper-Pair Density Waves in Cuprates

Author : Stephen Edkins
Publisher : Springer
ISBN 13 : 3319659758
Total Pages : 193 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis Visualising the Charge and Cooper-Pair Density Waves in Cuprates by : Stephen Edkins

Download or read book Visualising the Charge and Cooper-Pair Density Waves in Cuprates written by Stephen Edkins and published by Springer. This book was released on 2017-08-31 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis reports on the use of scanning tunnelling microscopy to elucidate the atomic-scale electronic structure of a charge density wave, revealing that it has a d-symmetry form factor, hitherto unobserved in nature. It then details the development of an entirely new class of scanned probe: the scanning Josephson tunnelling microscope. This scans the Josephson junction formed between a cuprate superconducting microscope tip and the surface of a cuprate sample, thereby imaging the superfluid density of the sample with nanometer resolution. This novel method is used to establish the existence of a spatially modulated superconducting condensate, something postulated theoretically over half a century ago but never previously observed.

Introduction to Unconventional Superconductivity

Author : V.P. Mineev
Publisher : CRC Press
ISBN 13 : 9789056992095
Total Pages : 204 pages
Book Rating : 4.9/5 (92 download)

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Book Synopsis Introduction to Unconventional Superconductivity by : V.P. Mineev

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.

Theory Of Superconductivity

Author : J. Robert Schrieffer
Publisher : CRC Press
ISBN 13 : 0429964250
Total Pages : 352 pages
Book Rating : 4.4/5 (299 download)

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Book Synopsis Theory Of Superconductivity by : J. Robert Schrieffer

Download or read book Theory Of Superconductivity written by J. Robert Schrieffer and published by CRC Press. This book was released on 2018-03-05 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory of Superconductivity is primarily intended to serve as a background for reading the literature in which detailed applications of the microscopic theory of superconductivity are made to specific problems.

Bogoliubov-de Gennes Method and Its Applications

Author : Jian-Xin Zhu
Publisher : Springer
ISBN 13 : 3319313142
Total Pages : 193 pages
Book Rating : 4.3/5 (193 download)

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Book Synopsis Bogoliubov-de Gennes Method and Its Applications by : Jian-Xin Zhu

Download or read book Bogoliubov-de Gennes Method and Its Applications written by Jian-Xin Zhu and published by Springer. This book was released on 2016-06-21 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to provide an elementary yet systematic description of the Bogoliubov-de Gennes (BdG) equations, their unique symmetry properties and their relation to Green’s function theory. Specifically, it introduces readers to the supercell technique for the solutions of the BdG equations, as well as other related techniques for more rapidly solving the equations in practical applications. The BdG equations are derived from a microscopic model Hamiltonian with an effective pairing interaction and fully capture the local electronic structure through self-consistent solutions via exact diagonalization. This approach has been successfully generalized to study many aspects of conventional and unconventional superconductors with inhomogeneities – including defects, disorder or the presence of a magnetic field – and becomes an even more attractive choice when the first-principles information of a typical superconductor is incorporated via the construction of a low-energy tight-binding model. Further, the lattice BdG approach is essential when theoretical results for local electronic states around such defects are compared with the scanning tunneling microscopy measurements. Altogether, these lectures provide a timely primer for graduate students and non-specialist researchers, while also offering a useful reference guide for experts in the field.

Superconductivity

Author : R.G. Sharma
Publisher : Springer
ISBN 13 : 3319137131
Total Pages : 427 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Superconductivity by : R.G. Sharma

Download or read book Superconductivity written by R.G. Sharma and published by Springer. This book was released on 2015-02-26 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the basics and applications of superconducting magnets. It explains the phenomenon of superconductivity, theories of superconductivity, type II superconductors and high-temperature cuprate superconductors. The main focus of the book is on the application to superconducting magnets to accelerators and fusion reactors and other applications of superconducting magnets. The thermal and electromagnetic stability criteria of the conductors and the present status of the fabrication techniques for future magnet applications are addressed. The book is based on the long experience of the author in studying superconducting materials, building magnets and numerous lectures delivered to scholars. A researcher and graduate student will enjoy reading the book to learn various aspects of magnet applications of superconductivity. The book provides the knowledge in the field of applied superconductivity in a comprehensive way.

Gravity-superconductors Interactions

Author : Giovanni Modanese
Publisher : Bentham Science Publishers
ISBN 13 : 1608053997
Total Pages : 334 pages
Book Rating : 4.6/5 (8 download)

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Book Synopsis Gravity-superconductors Interactions by : Giovanni Modanese

Download or read book Gravity-superconductors Interactions written by Giovanni Modanese and published by Bentham Science Publishers. This book was released on 2012 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Recent developments in gravity-superconductivity interactions have been summarized by several researchers. If gravitation has to be eventually reconciled with quantum mechanics, the macroscopic quantum character of superconductors might actually matter. T"

Spectroscopy of Complex Oxide Interfaces

Author : Claudia Cancellieri
Publisher : Springer
ISBN 13 : 3319749897
Total Pages : 326 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Spectroscopy of Complex Oxide Interfaces by : Claudia Cancellieri

Download or read book Spectroscopy of Complex Oxide Interfaces written by Claudia Cancellieri and published by Springer. This book was released on 2018-04-09 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the most recent and compelling experimental results for complex oxide interfaces. The results of this book were obtained with the cutting-edge photoemission technique at highest energy resolution. Due to their fascinating properties for new-generation electronic devices and the challenge of investigating buried regions, the book chiefly focuses on complex oxide interfaces. The crucial feature of exploring buried interfaces is the use of soft X-ray angle-resolved photoemission spectroscopy (ARPES) operating on the energy range of a few hundred eV to increase the photoelectron mean free path, enabling the photons to penetrate through the top layers – in contrast to conventional ultraviolet (UV)-ARPES techniques. The results presented here, achieved by different research groups around the world, are summarized in a clearly structured way and discussed in comparison with other photoemission spectroscopy techniques and other oxide materials. They are complemented and supported by the most recent theoretical calculations as well as results of complementary experimental techniques including electron transport and inelastic resonant X-ray scattering.

Electronic Properties of Materials

Author : Rolf E. Hummel
Publisher : Springer Science & Business Media
ISBN 13 : 3662024241
Total Pages : 323 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Electronic Properties of Materials by : Rolf E. Hummel

Download or read book Electronic Properties of Materials written by Rolf E. Hummel and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book on electrical, optical, magnetic and thermal properties of materials is in many aspects different from other introductory texts in solid state physics. First of all, this book is written for engineers, particularly materials and electrical engineers who want to gain a fundamental under standing of semiconductor devices, magnetic materials, lasers, alloys, etc. Second, it stresses concepts rather than mathematical formalism, which should make the presentation relatively easy to understand. Thus, this book provides a thorough preparation for advanced texts, monographs, or special ized journal articles. Third, this book is not an encyclopedia. The selection oftopics is restricted to material which is considered to be essential and which can be covered in a 15-week semester course. For those professors who want to teach a two-semester course, supplemental topics can be found which deepen the understanding. (These sections are marked by an asterisk [*]. ) Fourth, the present text leaves the teaching of crystallography, X-ray diffrac tion, diffusion, lattice defects, etc. , to those courses which specialize in these subjects. As a rule, engineering students learn this material at the beginning of their upper division curriculum. The reader is, however, reminded of some of these topics whenever the need arises. Fifth, this book is distinctly divided into five self-contained parts which may be read independently.

Superconductivity in Ternary Compounds II

Author : Merrill B. Maple
Publisher : Springer
ISBN 13 : 1489937684
Total Pages : 320 pages
Book Rating : 4.4/5 (899 download)

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Book Synopsis Superconductivity in Ternary Compounds II by : Merrill B. Maple

Download or read book Superconductivity in Ternary Compounds II written by Merrill B. Maple and published by Springer. This book was released on 2013-11-11 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nanoscience and Engineering in Superconductivity

Author : Victor Moshchalkov
Publisher : Springer Science & Business Media
ISBN 13 : 364215137X
Total Pages : 407 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Nanoscience and Engineering in Superconductivity by : Victor Moshchalkov

Download or read book Nanoscience and Engineering in Superconductivity written by Victor Moshchalkov and published by Springer Science & Business Media. This book was released on 2010-11-10 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: For emerging energy saving technologies superconducting materials with superior performance are needed. Such materials can be developed by manipulating the "elementary building blocks" through nanostructuring. For superconductivity the "elementary blocks" are Cooper pair and fluxon (vortex). This book presents new ways how to modify superconductivity and vortex matter through nanostructuring and the use of nanoscale magnetic templates. The basic nano-effects, vortex and vortex-antivortex patterns, vortex dynamics, Josephson phenomena, critical currents, and interplay between superconductivity and ferromagnetism at the nanoscale are discussed. Potential applications of nanostructured superconductors are also presented in the book.

Novel Superconductivity

Author : Stuart A. Wolf
Publisher : Springer Science & Business Media
ISBN 13 : 1461319374
Total Pages : 1086 pages
Book Rating : 4.4/5 (613 download)

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Book Synopsis Novel Superconductivity by : Stuart A. Wolf

Download or read book Novel Superconductivity written by Stuart A. Wolf and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Novel Mechanisms of Superconductivity Conference was initially conceived in the early part of 1986 as a small, 2-1/2 day workshop of 40-70 scientists, both theorists and experimentalists interested in exploring the possible evidence for exotic, non phononic superconductivity. Of course, the historic discoveries of high temperature oxide superconductors by Bednorz and Mftller and the subsequent enhancements by the Houston/Alabama groups made such a small conference impractical. The conference necessarily had to expand, 2-1/2 days became 4-1/2 days and superconductivity in the high Tc oxides became the largest single topic in the workshop. In fact, this conference became the first major conference on this topic and thus, these proceedings are also the first maj or publication. However, heavy fermion, organic and low carrier concentration superconductors remained a very important part of this workshop and articles by the leaders in these fields are included in these proceedings. Ultimately the workshop hosted rearly 400 scientists, students and media including representatives from the maj or research groups in the U.S., Europe, Japan and the Soviet Union.

NASA Glenn Coefficients for Calculating Thermodynamic Properties of Individual Species

Author : Bonnie J. McBride
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis NASA Glenn Coefficients for Calculating Thermodynamic Properties of Individual Species by : Bonnie J. McBride

Download or read book NASA Glenn Coefficients for Calculating Thermodynamic Properties of Individual Species written by Bonnie J. McBride and published by . This book was released on 2002 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Vortex State

Author : N. Bontemps
Publisher : Springer Science & Business Media
ISBN 13 : 9401109745
Total Pages : 330 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis The Vortex State by : N. Bontemps

Download or read book The Vortex State written by N. Bontemps and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most spectacular consequences of the description of the superfluid condensate in superfluid He or in superconductors as a single macroscopic quantum state is the quantization of circulation, resulting in quantized vortex lines. This book draws no distinction between superfluid He3 and He4 and superconductors. The reader will find the essential introductory chapters and the most recent theoretical and experimental progress in our understanding of the vortex state in both superconductors and superfluids, from lectures given by leading experts in the field, both experimentalists and theoreticians, who gathered in Cargèse for a NATO ASI. The peculiar features related to short coherence lengths, 2D geometry, high temperatures, disorder, and pinning are thoroughly discussed.