Superconductivity and Electromagnetism

Autor:	Teruo Matsushita
EAN:	9783030675684
eBook Format:	PDF
Sprache:	Englisch
Produktart:	eBook
Veröffentlichungsdatum:	23.02.2021
Kategorie:	Technik / Wissen
Schlagworte:	Critical Current Density;Flux Pinning;Ginzburg-Landau Theory;E-B Analogy;Pinning Loss Power Density;Mechanism of Irreversibility;Irreversible Electromagnetic Phenomena

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This book introduces readers to the characteristic features of electromagnetic phenomena in superconductivity. It first demonstrates not only that the diamagnetism in the superconductivity complies with Maxwell's theory, which was formulated before the discovery of superconductivity, but also that the dominant E-B analogy in the electromagnetism loses perfection without the superconductivity.

The book then explores flux pinning, which is responsible for the non-dissipative current in DC, leading to irreversibility in AC. Drawing on Maxwell's work, it also proves theoretically that if there is no energy dissipation in the superconductivity caused by the break in time reversal symmetry, it contradicts the thermodynamic principle of energy conservation - something that had previously only been proved experimentally.

Lastly, the book addresses the longitudinal magnetic field effect, and explains how this phenomenon leads to a new development of Maxwell's theory.

Featuring numerous appendices to help readers understand the methods of derivation of equations, this book offers students and young scientists an introduction to applied superconductivity, especially in the context of power applications.

Presenting the characteristic features of electromagnetic phenomena in superconductivity from basic to advanced topics for applications, the book offers a valuable resource for graduate students and researchers studying superconductivity as well as engineers working in electric utility industry.

Professor Teruo Matsushita has studied flux pinning and related electromagnetic phenomena in superconductors for 48 years. The first research field includes theoretical calculation of elementary pinning force of specific pinning centers and estimation of the pinning force density as a function of the elementary pinning force and number density. In the latter research field he establish the critical state theory that supports the well-known critical state model by using the first principles of minimizing the free energy in the reversible state followed by development to the irreversible state. The theoretical analyses of the longitudinal field problem and the effect of flux creep in high-temperature superconductors are also included in the latter category. He is a member of The Institute of Electrical Engineers of Japan, The Japan Society of Applied Physics, Cryogenics and Superconductivity of Japan, and Institute of Physics (UK). In 2014 he published the Springer undergraduate textbook Electricity and Magnetism, which now boasts close to 2 million downloads.