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

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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.

Iron-Based Superconducting Thin Films

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Publisher : Springer Nature
ISBN 13 : 3030751325
Total Pages : 403 pages
Book Rating : 4.0/5 (37 download)

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Book Synopsis Iron-Based Superconducting Thin Films by : Silvia Haindl

Download or read book Iron-Based Superconducting Thin Films written by Silvia Haindl and published by Springer Nature. This book was released on 2021-06-27 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a modern introduction to the growth, characterization, and physics of iron-based superconducting thin films. Iron pnictide and iron chalcogenide compounds have become intensively studied key materials in condensed matter physics due to their potential for high temperature superconductivity. With maximum critical temperatures of around 60 K, the new superconductors rank first after the celebrated cuprates, and the latest announcements on ultrathin films promise even more. Thin film synthesis of these superconductors began in 2008 immediately after their discovery, and this growing research area has seen remarkable progress up to the present day, especially with regard to the iron chalcogenides FeSe and FeSe1-xTex, the iron pnictide BaFe2-xCoxAs2 and iron-oxyarsenides. This essential volume provides comprehensive, state-of-the-art coverage of iron-based superconducting thin films in topical chapters with detailed information on thin film synthesis and growth, analytical film characterization, interfaces, and various aspects on physics and materials properties. Current efforts towards technological applications and functional films are outlined and discussed. The development and latest results for monolayer FeSe films are also presented. This book serves as a key reference for students, lecturers, industry engineers, and academic researchers who would like to gain an overview of this complex and growing research area.

The Iron Pnictide Superconductors

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Publisher : Springer
ISBN 13 : 3319561170
Total Pages : 197 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis The Iron Pnictide Superconductors by : Ferdinando Mancini

Download or read book The Iron Pnictide Superconductors written by Ferdinando Mancini and published by Springer. This book was released on 2017-05-25 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers different aspects of the physics of iron-based superconductors ranging from the theoretical, the numerical and computational to the experimental ones. It starts from the basic theory modeling many-body physics in Fe-superconductors and other multi-orbital materials and reaches up to the magnetic and Cooper pair fluctuations and nematic order. Finally, it offers a comprehensive overview of the most recent advancements in the experimental investigations of iron based superconductors.

Iron-Based Superconductivity

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Publisher : Springer
ISBN 13 : 3319112546
Total Pages : 452 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Iron-Based Superconductivity by : Peter D. Johnson

Download or read book Iron-Based Superconductivity written by Peter D. Johnson and published by Springer. This book was released on 2015-01-06 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents an in-depth review of experimental and theoretical studies on the newly discovered Fe-based superconductors. Following the Introduction, which places iron-based superconductors in the context of other unconventional superconductors, the book is divided into three sections covering sample growth, experimental characterization, and theoretical understanding. To understand the complex structure-property relationships of these materials, results from a wide range of experimental techniques and theoretical approaches are described that probe the electronic and magnetic properties and offer insight into either itinerant or localized electronic states. The extensive reference lists provide a bridge to further reading. Iron-Based Superconductivity is essential reading for advanced undergraduate and graduate students as well as researchers active in the fields of condensed matter physics and materials science in general, particularly those with an interest in correlated metals, frustrated spin systems, superconductivity, and competing orders.

Superconductivity in Ternary Compounds II

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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:

Fluctuational Superconductivity of Magnetic Systems

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Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Fluctuational Superconductivity of Magnetic Systems by : M. A. Savchenko

Download or read book Fluctuational Superconductivity of Magnetic Systems written by M. A. Savchenko and published by . This book was released on 1990 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Superconductors

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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.

Iron-based Superconductors

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Publisher : CRC Press
ISBN 13 : 9814303224
Total Pages : 564 pages
Book Rating : 4.8/5 (143 download)

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Book Synopsis Iron-based Superconductors by : Nan Lin Wang

Download or read book Iron-based Superconductors written by Nan Lin Wang and published by CRC Press. This book was released on 2012-11-19 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: From fundamental physics point of view, iron-based superconductors have properties that are more amenable to band structural calculations. This book reviews the progress made in this fascinating field. With contributions from leading experts, the book provides a guide to understanding materials, physical properties, and superconductivity mechanism aspects, and is important for students and beginners to have an overall view of the recent progress in this active field.

Growth and Characterization of Bulk Superconductor Material

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Publisher : Springer
ISBN 13 : 331931548X
Total Pages : 204 pages
Book Rating : 4.3/5 (193 download)

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Book Synopsis Growth and Characterization of Bulk Superconductor Material by : Dapeng Chen

Download or read book Growth and Characterization of Bulk Superconductor Material written by Dapeng Chen and published by Springer. This book was released on 2016-05-07 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on recently developed crystal growth techniques to grow large and high quality superconducting single crystals. The techniques applied are traveling solvent floating zone (TSFZ) with infrared image furnace, Bridgeman, solution/flux and top seeded solution growth (TSSG) methods. The materials range from cuprates, cobaltates to pnictides including La2CuO4-based (LCO), YBa2Cu3O7-d (YBCO), Bi2Sr2Can−1CunO2n+4+δ (n=1,2,3) (BSCCO) to NaxCoO2. The modified Bridgman “cold finger” method is devoted to the pnictide system with the best quality (transition width DTc~0.5 K) with highest Tc~38.5 K of Ba0.68K0.32Fe2A2. The book presents various iron-based superconductors with different structures, such as 1111, 122, 111, 11 and 42622,10-3-8. Detailed single crystal growth methods (fluxes, Bridgman, floating zone), the associated procedures and their impact to crystal size and quality are presented. The book also describes the influence of doping on the structure and the electric, magnetic, and superconducting properties of these compounds in a comparative study of different growth methods. It describes particularly under-, optimal and over-doped with oxygen cuprates (LCO, YBCO and BSCCO) and hole/electron/isovalently doped parent compounds AFe2As2 (A = Ba, Sr, Ca) (122), chalcogenides AxFe2-ySe2(A = K, Rb, Cs) (122), and Fe1-dTe1-xSex (11). A review of the current growth technologies and future growth efforts handling volatile and poisonous components are also presented.

Fermi Surface and Quantum Critical Phenomena of High-Temperature Superconductors

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Publisher : Springer
ISBN 13 : 3319486462
Total Pages : 169 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis Fermi Surface and Quantum Critical Phenomena of High-Temperature Superconductors by : Carsten Matthias Putzke

Download or read book Fermi Surface and Quantum Critical Phenomena of High-Temperature Superconductors written by Carsten Matthias Putzke and published by Springer. This book was released on 2016-11-16 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides a detailed introduction to quantum oscillation measurement and analysis and offers a connection between Fermi surface properties and superconductivity in high-temperature superconductors. It also discusses the field of iron-based superconductors and tests the models for the appearance of nodes in the superconducting gap of a 111-type pnictide using quantum oscillation measurements combined with band structure calculation. The same measurements were carried out to determine the quasiparticle mass in BaFe2(As1-xPx)2, which is strongly enhanced at the expected quantum critical point. While the lower superconducting critical field shows evidence of quantum criticality, the upper superconducting critical field is not influenced by the quantum critical point. These findings contradict conventional theories, demonstrating the need for a theoretical treatment of quantum critical superconductors, which has not been addressed to date. The quest to discover similar evidence in the cuprates calls for the application of extreme conditions. As such, quantum oscillation measurements were performed under high pressure in a high magnetic field, revealing a negative correlation between quasiparticle mass and superconducting critical temperature.

Magnetic Flux Structures in Superconductors

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Publisher : Springer Science & Business Media
ISBN 13 : 9783540679530
Total Pages : 332 pages
Book Rating : 4.6/5 (795 download)

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Book Synopsis Magnetic Flux Structures in Superconductors by : Rudolf Huebener

Download or read book Magnetic Flux Structures in Superconductors written by Rudolf Huebener and published by Springer Science & Business Media. This book was released on 2001-01-11 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition has been brought up to date by the inclusion of an extensive new chapter on aspects relevant to high-temperature superconductors. The new edition provides researchers, engineers and other scientists with an introduction to the field and makes useful supplementary reading for graduate students in low-temperature physics.

Superconductivity Centennial

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Publisher : World Scientific
ISBN 13 : 9813273151
Total Pages : 296 pages
Book Rating : 4.8/5 (132 download)

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Book Synopsis Superconductivity Centennial by : Rushan Han

Download or read book Superconductivity Centennial written by Rushan Han and published by World Scientific. This book was released on 2018-10-09 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the important contributions of the Chinese during the development of high-temperature superconductors (HTS). The study of Y-based HTS, which was the first to be reported internationally at a liquid nitrogen temperature above 90 K, has retained the world record for superconducting transition temperatures. The book covers the study of superconducting energy gap, microscopic electron non-uniformity, ARPES research, 'kinks' research, eHigh-Tᶜ. In order to provide a comprehensive introduction to the physical properties of condensed matter, this book also includes studies on the thermodynamic properties of high-temperature superconductors, low-temperature heat transport, and Raman spectroscopy. In addition, this book includes important topics in theoretical studies, including the study of the magnetic and superconductivity of iron-based materials, the non-diagonal long procedure in condensed quantum phases, and the creation of oxygen sites in the CuO₂ plane. Rotational fluctuations lead to the study of superconducting states. This book is suitable for researchers and graduate students in condensed matter physics, materials science, optics and other fields.

Superconductors

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Publisher : BoD – Books on Demand
ISBN 13 : 9535121332
Total Pages : 282 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 2015-08-24 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chapters included in the book describe recent developments in the field of superconductivity. The book deals with both the experiment and the theory. Superconducting and normal-state properties are studied by various methods. The authors presented investigations of traditional and new materials. In particular, studies of oxides, pnictides, chalcogenides and intermetallic compounds are included. The superconducting order parameter symmetry is discussed and consequences of its actual non-conventional symmetry are studied. Impurity and tunneling effects (both quasiparticle and Josephson ones) are among topics covered in the chapters. Special attention is paid to the competition between superconductivity and other instabilities, which lead to the Fermi surface gapping.

Nanoscience and Engineering in Superconductivity

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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.

High Temperature Superconductivity

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Publisher : Springer Science & Business Media
ISBN 13 : 9780387967707
Total Pages : 428 pages
Book Rating : 4.9/5 (677 download)

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Book Synopsis High Temperature Superconductivity by : Jeffrey W. Lynn

Download or read book High Temperature Superconductivity written by Jeffrey W. Lynn and published by Springer Science & Business Media. This book was released on 1990-03-01 with total page 428 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).

Exploring High-Temperature Superconductivity in the YBCO System

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Publisher : Springer Nature
ISBN 13 : 3031662385
Total Pages : 121 pages
Book Rating : 4.0/5 (316 download)

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Book Synopsis Exploring High-Temperature Superconductivity in the YBCO System by : Keltoum Khallouq

Download or read book Exploring High-Temperature Superconductivity in the YBCO System written by Keltoum Khallouq and published by Springer Nature. This book was released on with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Magnetic Flux Structures in Superconductors

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Publisher : Springer Science & Business Media
ISBN 13 : 3662023059
Total Pages : 272 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Magnetic Flux Structures in Superconductors by : Rudolf Huebener

Download or read book Magnetic Flux Structures in Superconductors written by Rudolf Huebener and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea for this book originated from an International Conference on Mag netic Structures in Superconductors organized by John R. Clem and the author at Argonne National Laboratory (ANL) in September of 1973. Large parts of the book evolved from lectures given to graduate students at the University of TUbingen during the past three years. It is the purpose of this book to provide an introduction to the many features of magnetic flux structures in superconductors and to discuss the this field. Here, in addition to the static proper recent developments in ties of magnetic flux structures, the time-dependent phenomena represent an important subject including flux flow and the transport effects in supercon ductors. Throughout the book the emphasis is placed on the physical phenom ena and the experimental results. We do not attempt a general introduction to superconductivity. Except for a brief discussion of the Ginzburg-Landau theory, with respect to the theoretical developments we only give an outline and refer to the original papers or other reviews for the detail of the calculations. The book is intended for researchers and graduate students interested in the subject of magnetic flux structures in superconductors. It may serve as supplementary material for a graduate course on low-temperature solid state physics. During recent years technological applications of supercon ducting materials are becoming increasingly important. Here the static and dynamic behavior of magnetic flux structures playa distinguished role. The book may be helpful for people envolved in these engineering aspects of superconductivity.