Unconventional Superconductors Anisotropy and Multiband Effects [Hardcover]

This book presents the anisotropy and multiband effects in newly discovered unconventional superconductors: cuprate superconductors, borocarbides, magnezium-diboride and oxypnictides. The physical properties of these unconventional superconductors and the application of the two-band Ginzburg-Landau theory to these superconducting compounds are explained. Temperature dependencies of fundamental superconducting parameters are calculated using the GL theory taking into account multiband-and anisotropy effects. A comparision of theoretical results and experimental data is conducted. Additionally, the analytical solution of the microscopical Eliashberg theory and of the BCS theory is developed for two-band and anisotropic superconductors. Fluctuation effects in newly discovered superconductors are also discussed.

Detailing the anisotropy and multiband effects in newly discovered unconventional superconductors such as borocarbides and magnesium diboride, this volume compares theoretical results and experimental data and explains a variety of contextual effects.

Physical properties of unconventional superconductors.- Ginzburg-Landau (GL) analysis of new superconductorts.- System of anisotropic Eliashberg equations and influence of multiband effects.- Fluctuation effects in newly discovered superconductors.

This book deals with the new class of materials unconventional superconductors, cuprate compounds, borocarbides, magnesium-diboride and oxypnictides. It gives a systematical review of physical properties of novel? superconductors. There is an increasing number of fundamental properties of these compounds which are relevant to future applications, opening new possibilities. The theoretical explanation is presented as generalization of Ginzburg-Landau phenomenology and microscopical Eliashberg theory for multiband and anisotropic superconductors. Various applications of this approachs and time dependent version of two-band Ginzburg-Landau theory arlók