Teacher
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SILVA ENRICO
(syllabus)
1 Introduction to Superconductivity. Zero resistance, persistent currents. Persistent Current Switch. Meissner effect. Type-II and type-II superconductors. Critical fields. Fluxoid quantization. London equations.
2 Superconducting materials. Elements. Alloys and binary compounds. Cuprates. Other superconductors.
3 Basics of the microscopic theory. Cooper pairs, BCS coherence length, BCS fundamental state. Quasiparticles. Effects of nonzero temperature. Experimental evidences: isotopic effect, gap in the electromagnetic absorption. Depairing current.
4 Josephson effect. Feynmann derivation. RCSJ model. dc Josephson effect. Shapiro steps. Voltage standard. SQUID; effect of a magnetic field, critical current and quantum interference. Weak screening. Applications.
5 Transport. Two-fluid model. ac conductivity. Surface impedance. Applications: delay lines; filters; accelerating cavities.
6 Thermodynamics of the superconducting state. Gibbs free energy. Condensation energy. Ginzburg-Landau theory. Characteristic lengths. Surface energy: type-II superconductivity.
7 Type-II superconductivity.. Fluxons or vortices. Abrikosov lattice. Lower and upper critical fields. Fluxon motion. Pinning. Irreversibility. Bean model. Flux-flow, flux-creep, TAFF.
8 Further topics. Anisotropic superconductors. Magnetic levitation. Power applications, cables, magnets for the nuclear fusion plants.
9 Laboratory, demonstrations
(reference books)
List of the textbooks used. A detailed list of chapters and paragraphs is on the website. Additional material (slides, short texts) can be found on the website. Website: http://www.sea.uniroma3.it/eldem/
[BK] W. Buckel, R. Kleiner, "Superconductivity - Fundamentals and Applications", Wiley
[EH] C. Enss, S. Hunklinger, "Low-Temperature Physics", Springer
[FS] K. Fossheim, A. Sudbø, "Superconductivity - Physics and applications", John Wiley and Sons, Ltd.
[IW] Iwasa, "Case Studies in Superconducting Magnets", 2nd Edition, Springer
[OD] T.P. Orlando, K.A. Delin, "Foundations of Applied Superconductivity", Addison Wesley si vedano anche le slide del corso "Applied Superconductivity" del MIT (Open CourseWare)
[OPe] F. J. Owens, Ch. P. Poole, Jr., "Electromagnetic Absorption in the Copper Oxide Superconductors", Springer
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