Suprafroth in type-I superconductors

TitleSuprafroth in type-I superconductors
Publication TypeJournal Article
Year of Publication2008
AuthorsProzorov R, Fidler AF, Hoberg JR, Canfield PC
Journal TitleNature Physics
Date PublishedApr
Type of ArticleArticle
ISBN Number1745-2473
Accession NumberISI:000255247400021

The structure and dynamics of froths have been subjects of intense interest owing to the desire to understand the behaviour of complex systems where topological intricacy prohibits exact evaluation of the ground state. The dynamics of a traditional froth involves drainage and drying at the cell boundaries; thus, it is irreversible. Here, we report a new member of the froth family: suprafroth, in which the cell boundaries are superconducting and the cell interior is normal, or non-superconducting. Despite having a very different microscopic origin, topological analysis of the structure of the suprafroth shows that the same statistical laws, such as those of von Neumann and of Lewis apply to a suprafroth. Furthermore, for the first time in the analysis of froths, there is a global measurable property, the magnetic moment, which can be directly related to the suprafroth structure. We propose that this suprafroth is a model system for the analysis of the complex physics of two-dimensional froths-with magnetic field and temperature as external (reversible) control parameters.

Alternate JournalNat. Phys.