High-temperature superconductivity : an introduction / Gerald Burns.

Format:

Book

Author/Creator:

Burns, Gerald, 1932-

Language:

English

Subjects (All):

High temperature superconductivity.

Physical Description:

xiii, 199 pages : illustrations ; 23 cm

Place of Publication:

Boston : Academic Press, [1992]

Summary:

Here is a concise, tutorial overview of the exciting new field of high-temperature superconductivity. This authoritative textbook focuses on topics, experimental results, and theoretical issues that are likely to have lasting value and are readily understandable to upper-level undergraduates and others new to the field. Written primarily from an experimental point of view, the book reviews conventional superconductors and then presents the structure, normal state and superconducting properties, and applications of the new cuprate superconductors. An insightful analysis of critical currents in thin films and wires is included. The book will provide an excellent supplementary text for students taking their first solid state physics course. In addition, all those with a basic knowledge of solid state physics will find the book to be a useful introduction to the field. Key Features* Serves as a concise, tutorial introduction to the field* Requires very little solid state physics background* Includes problem sets and references to key papers

Contents:

Chapter 2 Review of Conventional Superconductors 9

2-2 Two-Fluid Model 11

2-3 London Equation 13

2-4 Nonlocal Fields 16

2-4a Nonlocal Electrodynamics Sketched 16

2-4b Various Situations and Dirty Superconductors 17

2-5 Ginzburg-Landau Theory 18

2-5b GL Free Energy 19

2-5c GL Differential Equations 22

2-5d Flux Quantization 23

2-5e GL Coherence Length 24

2-5f Type II Superconductors 25

2-6 BCS Theory 27

2-6b Cooper Pairs and BCS Introduction 27

2-6c BCS Results 28

2-6d Specific Heat 31

2-6e Anisotropic Superconducting Gap 34

2-6f Coherence Effects 35

2-7 Strong-Coupled Superconductors 36

2-7b McMillan Equation 37

2-7c Maximum T[subscript c]? 39

2-7d Electron-Phonon Parameter Calculations 40

2-8 Tunneling 41

2-8a Tunneling Review 42

2-8b Tunneling Experiments 44

2-8c Phonon Structure 45

2-9 Other Topics 48

2-9a Magnetic Superconductors 48

2-9b Earlier Oxide Superconductors 51

2-9c Heavy-Electron Metals 51

2-9d Organic Superconductors 52

2-9e [superscript 3]He 53

Chapter 3 Structures 55

3-2 Structures 58

3-2a La(n = 1) 59

3-2b 2-Tl(n) 60

3-2c 2-Bi(n) 61

3-2d 1-Tl(n) 61

3-2e Distances 62

3-2f Y123 63

3-2g Other High-T[subscript c] Structures 65

3-3 Other Phases 69

3-3a La(n = 1) 69

3-3b Y123 71

3-3c Y123 with Intermediate Oxygen Content 71

3-3d Other Distortions 72

3-4 Conventional Superconductors 73

Chapter 4 Normal-State Properties 76

4-2 Cu-Charge State 77

4-2a Charges 77

4-2b Molecular Orbitals 78

4-3 Resistance 81

4-3a Conventional Resistivity Behavior 81

4-3b Resistivity of High-T[subscript c] Materials 83

4-4 Hall Effect 87

4-5 Magnetism 92

4-5a Insulator Phase 92

4-5b Superconducting Phase 93

4-6 Structural Phase Transitions 94

4-7 Bands

General 95

4-7a Fermi Liquid 95

4-7b Resonating-Valence-Band State 96

4-7c Band Theory 97

4-7d Simple Two-Dimensional Bands 97

4-7e More Advanced Two-Dimensional Bands 100

4-8 Band Theory 102

4-8b One-Electron Bands 103

4-9 Photoemission Spectroscopy 105

4-9b PES 2-Bi(n = 2) Results 107

4-9c PES Y123 Results 109

4-9d PES Summary 110

Chapter 5 Superconducting Properties 113

5-1 T[subscript c] Values 113

5-2 Cooper Pairs and BCS 115

5-2b Paired Electrons? 116

5-2c Spin Singlet or Triplet Pairing? 117

5-2d Symmetry of Electron Pairs 119

5-3 BCS Superconductors? 120

5-4 Superconducting Energy Gap and Other Properties 122

5-4a PES Results 122

5-4b Tunneling Spectroscopy 124

5-4c Specific Heat 126

5-4d Infrared Results 130

5-4e Raman Results 133

5-4f NMR Results 134

5-5 Isotope Effect 135

5-6 The Pairing Mechanism 138

5-6b Soft Phonon Modes 140

5-6c Temperature-Dependent Phonon Modes 141

5-6d Neutron Measurements 142

5-6e High-Energy Tunneling Results 145

5-6f Electron-Phonon Coupling Parameter Calculations 146

5-6g Electron-Phonon Coupling Parameter Measurements 146

5-6h Phonons plus Electron Density of States Singularity 147

5-6i Phonons Alone 149

5-7 Magnetic Properties 150

5-7a Type II Materials 150

5-7b Penetration Depth 150

5-7c H[subscript c1] 152

5-7d Coherence Length and H[subscript c2] 154

5-7e Anisotropic Ginzburg-Landau Results 156

5-7f Torque Magnetometry 158

Chapter 6 Vortex Behavior, J[subscript c], and Applications 160

6-2 Flux Lattice, Flux Glass, and Pinning 162

6-2a Flux Lattice and Glass 162

6-2b Pinning 163

6-3 Films and Critical Currents 164

6-3a Films 164

6-3b Superlattices 165

6-3c Wires 165

6-3d Critical Current 167

6-4 Macroscopic Magnetic Properties 170

6-4b Vortex Glass 171

6-4c Flux Creep 171

6-4d A True Zero Resistance State? 172

6-4e Experimental Vortex Glass-Liquid Measurements 173

6-4f Irreversibility Line 174

6-5 Applications Introduction 177

6-6 Large-Scale Applications 178

6-6b Wires and Superconducting Magnets 179

6-6c Levitation 179

6-7 Small-Scale Applications 181.

Notes:

Includes bibliographical references (pages [184]-186) and index.

ISBN:

0121460908

OCLC:

24380147