Superconducting materials : advances in technology and applications : International Advanced School Leonardo Da Vinci 1998 summer course, Bologna, Italy.

Format:

Book

Contributor:

Tampieri, A.

Language:

English

Subjects (All):

Superconductors--Congresses.

Superconductors.

Electric conductivity--Congresses.

Electric conductivity.

Physical Description:

1 online resource (370 p.)

Place of Publication:

Singapore ; [River Edge,] N.J. : World Scientific, c2000.

Language Note:

English

Summary:

This volume consists of lectures highlighting fundamentals of advances in superconducting materials, related technologies and applications. Theory, fundamental aspects, advances in materials synthesis, processing and properties are featured, as well as current developments of superconducting components and devices.Both HTC and LTC superconducting materials are discussed. Several years after the discovery of high T c superconductivity and a multinational effort in its study, this book collects the main results on the subject and presents a state-of-the-art view of the correlations between cryst

Contents:

Preface; Contents; Introduction; SUPERCONDUCTING MATERIALS:HISTORY AND THE FUTURE; 1. The Tc Barrier of BCS Superconductors Till 1986; 1.1. Development of low temperature superconductors; 1.2. Critical temperature 23K of Nb3Ge: Unsurmountable Tc-barrier?; 2. USO: Unidentified Superconducting Object; 3. Discovery, Confirmation and Identification of the High Temperature Superconductors; 4. Further Materials Developments; 5. Unique Electronic Structure in the HTS Cuprates; 6. Characteristics of HTS Superconductivity Phenomenology; 6.1. Anisotropy factor and crystal structure

6.2. Anisotropy and irreversibility6.3. Anisotropy and the first order vortex lattice phase transition; 6.4. Anisotropy and the dimensional cross over in the low temperaure; 7. Future Material Designing; 7.1. Practical usage of Bi2212 and B12223 at 4K, 20K and 77K; 7.2. Methods to improee the current carrying performance under strong magnetic fields; 7.3. Rhenium-doped Hg1223 system; 7.4. Heavily lead-dopdd Bi2212 system; 7.5. Trends of the developments of B12212 and B12223 wires; 7.6. Non-cuprate materials; 8. Weak Pinning Potential in the Under-Doped Regime; References

Mechanism and Physical Properties of High Temperature SuperconductorsCritical Temperature; Tunneling spectroscopy.; References; Magnetic Scattering; References; CRITICAL CURRENTS IN SUPERCONDUCTORS; I. INTRODUCTION; II. PARAMETERS TO AFFECT CRITICAL CURRENTS; II. 1. Carrier density; II. 2. Coherence length; II. 3. Depairing current (pair breaking current (3); III. CRITICAL CURRENTS IN TYPE I SUPERCONDUCTORS [4]; IV. CRITICAL CURRENTS IN TYPE I SUPERCONDUCTORS [5]; V. CRITICAL CURRENTS IN PINNED SUPERCONDUCTORS; V.l. Elementary pinning interaction; V.2. Bulk pinning force

V. 3. Case study for Y2BaCuO5 inclusions [7]VI. SUMMARY; REFERENCES; SUPERCONDUCTING FLUCTUATIONS AND THEIR ROLE IN THE NORMAL STATE ANOMALIES OF HIGH TEMPERATURE SUPERCONDUCTORS; 1. Introduction; 2. Excursus to Superconducting Fluctuation Theory; 3. Fluctuation Cooper Pairs Above Tc; 4. Qualitative Consideration of Different Fluctuation Contributions; 5. The Effect of Superconducting Fluctuations on the One-Electron Density of States; 6. The Effect of Fluctuations on the Tunnel Current; 7. C-Axis Resistivity Peak; 8. Magnetoresistance Above Tc; 9. Optical Conductivity; 10. Conclusions

ReferencesPINNING MECHANISMS IN HIGH-TC AND CONVENTIONAL SUPERCONDUCTORS; 1 Introduction; 2 Critical currents of HTS; 2.1 Performance; 2.2 Optimal values; 2.2.1 Conventional superconductors; 2.2.2 YBCO; 2.2.3 BSCCO; 2.3 Effects of temperature and field; 2.4 Flux creep and the ""critical"" current; 3 Collective pinning; 3.1 Introduction; 3.2 The theory of collective pinning; 3.3 Comparison with single crystal data; 3.3.1 NbSe2; 3.3.2 Nb; 4 Pinning in HTS; 4.1 Introduction; 4.2 Point disorder by oxygen vacancies; 4.3 Line disorder by columnar defects; Acknowledgement; References

Transport properties of HTCS in a temperature gradient and a magnetic field

Notes:

Description based upon print version of record.

Includes bibliographical references.

ISBN:

9789812792945

9812792945