1999/04/07 by Adriaan M. J. Schakel, Schakel, Adriaan M. J.
Materials Science · Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9904092
16 pages, 1 figure. Lectures presented at the NATO Winter School and European Science Foundation (ESF) Workshop Topological Defects and the Non-Equilibrium Dynamics of Symmetry Breaking Phase Transitions, Les Houches, February 16-26, 1999, in Topological Defects in Cosmology and Condensed Matter Physics, edited by Yu. Bunkov and H. Godfrin (Kluwer, Dordrecht, 2000)
arxiv created 1999/04/07 · openalex publication_date 1999/04/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In the first part of this review paper, the time-dependent Ginzburg-Landau theory is derived starting from the microscopic BCS model with the help of a derivative expansion. Special attention is paid to two space dimensions, where the entire crossover from the weak-coupling BCS limit to the strong-coupling BEC limit of tightly bound fermion pairs is accessible analytically. The second part deals with the dual approach to the time-independent Ginzburg-Landau theory in three space dimensions. In this approach, the magnetic vortices of a superconductor play the central role, and the superconductor-to-normal phase transition is understood as a proliferation of these vortices.