http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Electromagnetics of superconductor/paramagnet heterostructures
Conditioning of magnetic fields is a novel route to improve type-II superconductor performance. Through a methodical analysis and noteworthy solutions, this book presents a phenomenological account of the remarkable electromagnetic properties of superconductor paramagnet heterostructures.
Redistribution of the transport current in a superconductor affected by paramagnetic shields provides a possibility of strongly overcritical states and a drastic reduction of AC losses in thin superconductor films and tubes. Such superconductors subject to para- or diamagnetic shielding are studied by means of the potential theory and the critical state model when carrying a transport current or exposed to an external magnetic field. Analytical results are obtained for a number of shielding geometries and confirmed by numerical solutions. It is shown that using magnetostatic-electrostatic analogies allows consideration of paramagnetic shielding configurations of arbitrary shapes and magnetic permeabilities by means of common finite-element solvers to enhance the dissipation-free transport currents in superconductors and reduce AC losses in them. Furthermore, using the generalized London theory, the penetration of magnetic flux into magnetically shielded bulk superconductors is studied and the enhancement of the Bean-Livingston barrier is established.
1 Introduction -- 2 Phenomenological concepts in superconductivity -- 3 Meissner state of a superconductor strip in ideal paramagnetic environments -- 4 Critical state of a superconductor strip in ideal paramagnetic environments -- 5 Meissner state and critical state of a superconductor strip in ideal diamagnetic environments -- 6 Meissner state of thin superconductors in nonideal paramagnetic environments -- 7 Critical characteristics of bulk superconductors in nonideal paramagnetic environments -- 8 Meissner state and critical state of thin superconductors in arbitrary paramagnetic environments: finite-element simulations -- 9 Epilogue -- Appendix A Magnetic dipole moment of supercurrent distributions in paramagnetic environments -- Appendix B Electromagnetic energy associated with magnetic vortices in superconductor/paramagnet heterostructures
Includes bibliographical references and index.
Oxford, United Kingdom ; New York, NY : Oxford University Press, [2025]
International series of monographs on physics ; 175